By FAR 3d scenes take forever especially animated. There are pros who pump out just animated porn [video game characters] pulling 6 figures and only get out one like 4ish animation loops a month.
I think you way underestimate how much time it takes to code a game and make sure its working though. Even after everything is in place and things break no matter what. Something Unlimited works his ass of drawing and doing everything by himself and will post the game update which is by the numbers - new girl - new scenes. Then you will hear people screaming that everything is borked and not only that but stuff that did work is now borked.
You must be registered to see the links
He makes like 2 pictures and 2 animation loops[10-30secs] a month. If your looking for a comparison.