Board Thread:General Discussion/@comment-1031724-20160315220335/@comment-2118191-20160324213953

KillRoy231 wrote: Ah, that clears it up. It is kinda consistent with what I heard, because those games are in continuity with the TV series, but still a Sonic game. In that case it makes more sense that they'd have her, but I can't see why Nintendo won't put Fawful in there then since the Mario & Luigi games should be considered on the same level as Sonic Boom

Because Sega do what Ninten-don't. I'm sorry, but they literally will never consider anything outside what they may consider as the "main Mario games" and evidently the RPGs don't count (yet the sporting titles do...somehow).