Several comments later someone else has the same conclusion. CW Brawl is probably one of the best examples of it too. The first run Hasbro one had the horrible waist. Later ones (I got one so I can say first hand) had better waists that held in place just fine and both TT and Hasbro releases afterwards are on par with that. Sadly it's rather rare that both Hasbro and TakaraTomy come out with something simultaneously though so it's hard to verify that part. To be honest I can't even recall the last time that's really happened.