Vicarious Visions has detailed how they decided on the handling, collision/physics mechanics as well as the difficulty of Crash Bandicoot when creating the N. Sane collection. They’ve gone on the record saying that they decided to model the handling off Crash Bandicoot Warped which is why the first game feels a little different in the N. Sane Trilogy.
Further to this, they have admitted that they redesigned the collision and physics system which is why it does feel a little but different to the original game. In regards to the difficulty, they’ve pretty much said that if you’re having trouble then you’re better off starting with Crash 2 and Warped before coming back to the original game.
The full post can be found below: