Attack Rate =* (1 - Attack Speed)Mitigated = Damage * DefensePenetrated = Mitigated * (1 - Penetration)Final Damage = Damage - PenetratedMovement speed does not scale linearly, A Pawn with 2 movement speed isn't twice as fast as a Pawn with 1. Movement speed is not necessarily a guaranteed positive stat, as it increases flux, resulting in absorbing more hits. But it can be good in certain situations or against certain Pawns.
Body size does scale linearly. A body twice the size of another has a sprite that's twice as big. Body size does not affect attacks, only the Pawn's sprite & hitboxes. Body size is almost exclusively a bad stat, as it causes more incoming attacks to land with no benefit.
Hitpoints * (1 - defense), and Damage Per Second can be calculated with Attack Speed / Attack Count.