Is Megaman battle network 6 and new crisis the same game?

No, MegaMan Battle Network 6 and MegaMan Battle Network: New Crisis are not the same game. MegaMan Battle Network 6 is the final installment in the original Battle Network series, released for the Game Boy Advance. New Crisis, on the other hand, is a fan-made project that aims to expand on the Battle Network universe but is not an official game in the series.