Cosmo Gang the Puzzle was released here as Pac-Attack and the Dodgeball game is the SNES version of the NES game Super Dodgeball (would that make it Super Super Dodgeball here?). Big Run is a SNES port of the little-known arcade game.
Battletoads and Double Dragon has nothing to do with Double Dragon gameplay-wise, it’s just more Battletoads with Double Dragon characters.
Not really unusual. They don’t care if you pirate stuff, they just want you to pay for internet access. They only sent notices and such to keep the rights holders happy.