Would Kevin Hart be who he is today if Patrice was alive? Would Hart be "that guy" in terms of comedy?
If you mean Patrice takign the roles from him, no. Chris Rock told O&A that Patrice turned down contract after contract beucase he didn't want to be what they wanted him to be.
If you mean Kevin without Patrice's influence on his comedy and their friendship, no idea. I do remember when Patrice was around though that Hart always felt like the guy that kinda followed Patrice around on stuff like Tough Crowd.