It's hard to say, isn't it? It's not like very many people left have seen Hendrix live. I've seen Prince a few times, though. I've also seen Eddie Van Halen a couple of times. From what I do know of Hendrix I would not put Prince anywhere near him nor Eddie Van Halen. Prince is great, plays a mean ass solo, but much of being great is in being able to carry the whole effort with your guitar artistry. Prince writes great songs but is not a guitarist that could carry everything with the guitar work alone.
The guy I've seen live, other than Eddie Van Halen, who could carry anything was Slash. OMGBBQ was he amazing. He was a lot more like what I think Hendrix must have been like than anyone else I've seen live.