Both. There's a lot he needs to work on but he'll be stronger in future fights after having come though that. I get the feeling the hype will cool off a bit which could be a good thing.
None of the lightweight champs would have much trouble with him IMO. And his stamina's still questionable at best.
Good fight but I'd favour Barker. Proksa's wild offensively and I can't see him landing much at all, when you look at how well Barker was neutralising Sergio's offense. And they'll be plenty of opportunities for Barker to land his own shots.
He does and I can't see him gong very far unfortunately. But whatever level he gets to he'll be in good fights.
My money's on Tye Fields.