>>718107890
Two reasons:
1: Controls dont emulate the feel of piloting a mech. They feel like any other shooter or action game

2:Scale never translates. Walking down a city street with sky scrappers on your left and right feels no different than walking down a hallway. I dont feel like im in a giant mech, i feel like im any other cyborg character. I might as well be Raiden from MGSRR, makes no difference. Only game that captures the scale of mechs is Titan Fall 2, because you have to doge them, climb them as and use guarilla tactics to subdue them.