Owen was smaller & lighter than Bret, and could therefor do some of the acrobatic stuff that Bret couldn't.
Both were good ring workers, but with different styles.
Owen worked a faster pace, but I think Bret got more out of his matches by creating an emotional hook for the fans.
IMO, Own beat Bret in the aerial and gymnastics departments, but I'd give "storytelling" points to Bret.
I have to agree. Owen's ringwork was flashier, but Bret was more of a total package, with stronger storytelling and ring psychology. Also, and this always killed me with Owen (RIP): he'd have a 4-5 star match, come out of the ring, and totally botch the post-match interview. That was the thing, lack of mic skills, that I thought always put Bret over Owen, and Bret was no master of the stick.