So, few schools of thought here..
So I will conceed the MMPR was getting their asses handed to them, unmorphed specifically. But keep in mind, the turtles had years with Splinter teaching them before getting put out to protect, MMPR got tossed out there. Even later on when they got better, I could probably see them losing to the turtles unmorphed.
But once morphed? Even early on, besides the numbers advantage of at least +1 (if we’re not inviting the Green Ranger), there is just wayyyyy to much at their disposal and the turtles don’t have anything to escalate the fight further with.
There is actually a comic that is pretty good that dives into this a little (parts were posted earlier in the thread). It’s a bit more of a stalemate in the comic.
So unmorphed, I think they kicked everyones ass not named Jason or Tommy but otherwise turtles get spanked.
Not me doe