re: Dying Light vs Sunset Overdrive...which one to get?

Bull fricking shite. You might not like them but to say they're mediocre is an objective statement and a bold faced lie.

As for the games. Never played sunset but it's bright. I really really enjoyed dying light and I am one of the few who loved the jumping mechanics. A lot of people are turned off at first because you are ridiculously underpowered for awhile and then you get better and better. I recommend it.