Generations and "Hasbro's" versions are one in the same? Are you asking about Takara vs Hasbro? Yes. Same molds, same issues, different paint jobs.
I posted a review thread for Rhinox when Takara's came out: http://www.tfw2005.com/boards/transformers-feedback/976405-takara-generations-tg-31-rhinox.html As one of the pics shows, no issues with looseness in the hips or knees on mine, and I haven't heard of anyone else experiencing those issues with Takara's release, though honestly I'm not sure how many in the States bothered to import it like I did. No idea about Waspinator though (though I can't remember what issue he did have, if any?).
I have Takara versions of both Rhinox and Waspinator. After two weeks, hips on Waspinator got loose just from standing, but got no stress on shoulders. Knees on Rhinox are still really tight, one hip is decent and the other one is pretty loose, but he can still stand without any problems.
thanks its look like i am going to buy rattle instead of rattrap mmmmmmm its hurts but it is better that crap