The problem with Diaz now, is people will never give him respect because of who he's fighting. It's all Strikeforce has to offer though, it's another case of Fedor/Reem/Shields. Shields being the only one to make a move to solidify himself though.
Diaz is a tough SOB, who will hang with any fighter out there, but I do agree he wouldn't fare any better than the rest of the WW's in the UFC once they hit a top wrestler. So i'm content with him fighting in Strikeforce, the fights will be more entertaining.