Perception is a lot of it. It doesn't matter if everyone is running around like they're in ghost mode, the animation is going to feel faster.RIP Halo.
All you need is a fancy animation to feel fast right?
I like sprint because it makes things faster without being faster all the time and there's a tangible risk/reward for using it. Try and beat the other team to the power weapon? Or sit back and trust in your superior aim to stop them first?