Little Ralphy
Player Valuation: £15m
I'd put them all on a par to be honest, Jones probably has the most impressive record of them all, technically no losses and beat a lot of contenders in their prime.
GSP has the best record IMO. He dominated every round of every fight pretty much, until his knee injury. To the point where people had nothing for him and the division was completely cleaned out. GSP certainly benfitted from the great rivalry with Hughes and Penn though.
Jones has dominated most of his fights as well, but the fight vs Gus was close, and DC had a chance had he have been better prepared. Jones has fell out at the wrong time because a heated rivalry and further victories over those 2 fighters along with beating Rumble would have elevated him to the top for sure.