Has Arthur improved much lately. I've seen one of his fights since the Gomez fight but missed the last few.

He's way too slow for Guzman IMO. I'd give him a better shot against Soto but I don't know how he's looked lately. Still wouldn't favor him against Soto from what I've seen.

As for Pac-Guzman, I think Guzman has the best chance except for maybe JMM. In fact I'd go ahead and say I'd pick Guzman.