Here's the thing with K&P...they are funny, to me at least partly because they understand white humor.
I love comedians. I look at stand ups and comedic actors like I do rappers damn near so I kinda study them. And while I won't say that there is "black" comedy and "white" comedy being able to relate to different demos is a skill that comedians need IMO to be ATG's. Dave to a lesser extent is a black man that understood how to connect to white folks sense of humor.
K&P being bi-racial, it comes natural to them to be able to tap into corny, white/absurdest humor and they are good at it, even if they're inconsistent with it.
This shyt fukking KILLED ME yo...
But that's a special blend of perspective that you aren't going to get from a stereotypical "black" comedian. They are comfortable with being odd-balls around other black people due to their upbringing because I would imagine it's probably been one of their life's challenges, so you see it come up and play out in their skits and even in the Keanu movie. They are very self aware of how they are perceived and they try to make something out of it. I admire that. Dave has the same flavor like Aries said. I wouldn't say it's about authenticity because they are def AUTHENTIC in themselves...Dave is just funnier/better at this shyt.