I work at GameStop. Reservations for Uprisingwere going for awhile before Brawl came out. And yes, they may not have anything to do with each other, but if they did it was a great marketing strategy to get Pits name out there to the gamers who don't know him. It's more about publicity than anything else for what new characters go into super smash, and any game for that matter. Sonic and Snake didn't just get in out of popular demand, it was also an attempt to get those names circulating again.