^ yeah, there are 4 six flags parks that have very solid B&M line-ups (MM, GAdv, GAm, and OG), but I think the reliance on batman, superman, and medusa clones hurts them a bit when viewed through the eyes of seasoned, well-travelled enthusiasts who place a high premium on unique, one-off experiences.
Taken on their own, the B&M line-ups at any of those 4 six flags parks are pretty damn excellent. I mean, imagine if the other 11 batman clones were never built and the original one at SFGAm was still the only one in existence, I have to believe that its cachet would be considerably higher. Nearly 3 decades later and it still packs one hell of a punch for its more modestly-scaled size. They seriously knocked that design clear outta the park on their very first try.
But the cedar fair and seaworld park B&M line-ups tend to lean more heavily on custom one-off designs (or rides that only have one other clone on a different continent on the other side of the world like raptor, griffon, sheikra, and manta), and therefore they seem a little more "special" and stand out a bit more compared to six flags' clone-heavy line-ups.
However you want to slice it, us north americans are freaking spoiled when it comes to multi-B&M parks, with 11 different parks that have at least 3 of 'em.