By this argument, Goku and Vegeta with their extended family aren't average saiyans either. Average saiyans have what... less than 10,000 battle power? But you are using Goku and Vegeta as a baseline saiyan to say saiyan are superior to earthlings. While completely nullifying any achievement earthlings had.
like i said in my other post
its the saiyan dna.
the other saiyans didn't become super because they never trained hard enough
because they believed super saiyans were just made up legends
so they would only transform into giant apes...
but i'm certain that if vegeta would use the dragonballs
to bring back planet vegeta and all his peoples
then shows them that the legend is true and they just have to train hard
and maybe cut off their monkey tails...
like really hard training:
daily workout and sparring fights until they almost die then eat a senzu bean
and never skip leg day
especially raditz but he gets no beans anyway and has to clean the toilets
then universe 7 would have an army of super saiyan gods/bodybuilders
also king vegeta and bardock would be so proud of their boys and grandchildren
although king vegeta would be really angry with his son for breeding with pathetic earthlings
also not naming trunks vegeta becouse of the royal blodline...
but considering how powerful trunks is maybe he would forgive him... just maybe
or the 2 fight and vegeta has to kill his father again
then takes his rightful place as the new saiyan king and makes new rules:
like breeding with earthlings is ok because the resulting hybrids are strong
also builds super saiyan gyms/arenas and senzu bean farms
turning the saiyan from space barbarians to civilized peoples
who spent their lives training and fighting in tournaments
king vegeta ruler of the super saiyan gym bros
now that would be a completely different timeline...
You simply decided it doesn't work on Jiren or Hit.
And why would Jiren and Hit collectively decide they want to gang up on the earthlings in the first place? If anything, these two would be busy duking it out with each other for supermacy and pretty much everyone would realize Jiren is the biggest threat. So unless all the participants in the tournament are dumb, they would be focusing on the Pride Troopers. Not the earthlings.
Jiren has enough self control and discipline not to simply step/fall out of the arena
even if the arena is turned into small floating pieces...
and hit can skip/stop time which would make UI almost useless
and yes the other fighters aren't dumb so they take out the weaklings first
to avoid the risk that some cheating weaklings will steal the victory in the end...
especially when they see how roshi and krillin fight...
you must consider that they are the strongest warriors of their respective universes
too see some weakling tricking one of them out of the ring without giving him a worthy end
would enrage most of them, especially Top who would order his team to wipe out these
cheating and annoying weaklings from universe 7
also frieza and vegeta would still be in their weak base form since they cant train in hell..
Not to mention, if Goku is taken out of the story entirely, there's a huge chance the entire Super won't happen to begin with. Beerus came to earth because of the whole Super Saiyan God thing, Zamasu storyline happened partially because of future Trunk's unsanctioned time traveling, which won't happen in the first place if Krillin already went back in time with future knowledge for a full continuity reboot since he would know about the whole Dr. Gero threat. The whole universal survival tournament happened because Goku became too chummy with Zeno (which won't happen to Krillin with his different personality and future knowledge),
that's possible...
but the tournament was also held to determine if it's worth keeping these weak universes...
Yes. Any bodybuilder can instantly increase their muscle mass by more than tenfold. Roshi went from a skinny old man, into an over the top bodybuilder more buffed than real life body builder hooked up on body destroying steroid. That's clearly not normal body building, and at the very least some kind of advanced ki technique that shows earthling body in Dragon Ball is much more adaptable than us. Not to mention that one guy in the OG Dragon Ball was literally a werewolf who can body morph into a wolf.
Neither are as good as even a base SSJ's 50 battle power multiplier, yes. But both clearly show earthling body are capable of some kind of drastic transformation in Dragon Ball universe. So giving an earthling some kind of power boosting transformation wouldn't be a complete ass pull out of nowhere. A number of Dragon Ball fans are just conditioned into thinking only Saiyan can get colorful, fancy transformations and that's the only thing matters in Dragon Ball.
Where exactly in the story does it say Saiyans got special UI? I haven't religiously read Super because I think it's written badly, so you'll have to quote me the chapter and let me go check it up. But once again, it doesn't prove earthling can't get UI and have some kind of strong synergy with it too. The only reason earthling characters not getting the love and respect they deserve is because a large part of Dragon Ball fandom only care about saiyans, so the creative team went where the money goes.
again roshi is not a normal human he has trained for hundreds of years and eats magic fruits...
but he still only puffs up his old muscles, nothing else
and werewolves are monster/mutants like vampires...
take the MCU as example which is full of mutants but only a few can actually transform
like: the hulk, mystique, emma frost, colossus and some more..
but a non mutated/magic human body simply cannot transform
but to be fair earthlings culld try fusion dance or put on potara earrings...
also for the 3. time UI/kaioken are techniques that give a temporary boost to speed/power
but this boost comes at a price especially for weak human bodies
they can learn the basic UI/kaioken but permanent UI or 10x kaioken will kill them
their weak bodies cannot handle it...
as for saiyan adaption to UI just googel it...
goku has already mastered more powerful versions of UI by combining it with his super forms