Ah, I may have misunderstood strength as meaning "what powers you get". I now realize it was in reference to actual strength. My bad. Yes, I agree with this wholeheartedly.
Yeah. Any power is ultimately meaningless if it's not cultivated. Even a power as strong, on paper, as Michael's would be a fart in the wind if he didn't have the drive to learn to use it better.
I mean, look at the MC. His powers technically don't predispose him for fighting. So, compatibility and the identity of the monster parents is ultimately only telling one thing : the inherent potential.
But even that doesn't do much on its own. It really boils down to the drive of the user and their intelligence in how to use it.
I think that, if someone like Tess for example had gotten the MC's powers, she'd be far from where he is with the same amount of time. The main difference being that he wanted to control his powers more, while she'd likely have used it solely for fucking.
Any good power, given to someone who's personality is unfitting, isn't gonna go far. Like, look at that asshat Jake, for example. Sure, guy's smart, but ultimately his willpower is absolutely lacking, because deep down he's just a bully-bait.
Give a power like that to a more power-hungry character, however ? That would be a disaster for everyone around.