Different weight classes. Starling was much better P4P though, Rooster's just proving his idiocy again.
Starling held his own twice against Curry, one of which was definitely in Curry's prime and the other was an important up and comer crossroads fights. Stopped Honeygan, Breland, beat Simon Brown. Lots of good results. He'd have too much for Witter andf I think stop him late.
Witter has a similar style to Naseem Hamed. Hands down, punches coming from the waist, extremely unorthodox, a defense based soley on reflexes and speed, and they liked to sit back and counter. The uppercut being a very important weapon in their arsenals. I noticed when Bradley beat Witter a couple of months ago he used the same type of strategy that Barrera used against Hamed. He never rushed him, fought on the outside, timed his jab very well, and ocassionally opened up with heavy artillery. Bradley and Barrera took them both out of their rhythm. They both made Hamed and Witter unsure. And with that came single punches instead of boxing behind the jab with combinations. Starling is head and shoulders above Bradley. Especially on the defensive side of the game. He's got the style to beat Witter.
The only chance i think Junior has if Marlon comes in, in an extremely lackadasical switched off mood, then he might have a chance, Hell, if Johnny Bumphus could pull off a Win over Marlon, (still Puzzling over how that happened !) then Junior might beat this Marlon on close Points decision, But this was an unusally lazy Marlon, normal Marlon Wins, the Marlon who uncharactoristically attacked Breland 1st time around, would Probably Chase Junior out of the ring.
I think Witter is a decent fighter, and i want to pick him, i think his style is good, because he uses it well. But the facts are that Starling has beaten much better opposition more often than Witter has beaten lesser opposition, i will pick Starling in light of that, but i dont know for sure.