Mike was never a serious contender to win any shows. He was basically a crowd favorite... never a top tier contestant.
It was said that he joined the WBF only because he thought the rest of the IFBB would not join and their absence would give him a better chance to actually win a show.
Mike Quinn was one of those Olympia-to-Olympia guys. Plus, he placed top 10 at the Olympia at least twice, prior to leaving for the WBF.
I recall having a somewhat spirited debate with another poster about this subject months ago. But, back in the day, placing top 10 at the Olympia gave you more clout as a bodybuilder (especially since it qualified you for the next year's O) than winning lower pro shows.
So, Quinn was considered among the elite. As for the WBF, Berry DeMey was the very first one signed, if I remember correctly. I had the issue of Bodybuilding Lifestyles/WBF magazine, claiming that he was their first superstar.
But other guys were going and there were a number of close calls. Rich Gaspari came within an eyelash of signing. Shawn Ray seriously considered it, until he learned (per his claim) that McMahon offered him $225K per year (hot off his 3rd-place Olympia finish), while offering Ray's training partner, Troy Zuccolotto, $275K per year (despite his having only won the Nationals in '89 and not competing at all in '90).