Edgar is fast and has good head movement and a great gas tank along with awesome wrestling skills and he's very strong for a smaller guy, I think some of his opponents are surprised with how strong he is for his size.
It would be a good fight, but no way would it be anything like Nate vs. Gomi. Gomi keeps his hands pretty low, Edgar always has his hands up and he's constantly moving and cutting angles very well. Would be an extremely hard fight for Diaz and I wouldn't be surprised if Frankie got the UD at all.
Oh, and they didn't rob Edgar twice. I had Bendo winning the 1st fight in a close decision, but had Frankie winning 4-1 in the 2nd fight judging off the only time I've watched it, maybe I'll rewatch it, but I already know Frankie should have got that decision.