No- TRM has a strong argument here.
Maybe... Luigi really is Bowser's partner in crime. Then, Waruigi isn't really Luigi's evil twin, 'cuz they're both evil. Or maybe Waruigi is the good Luigi, and Luigi is Waruigi. Then, Luigi has been putting Mario on for the past 15 years, while Waruigi (Mario's REAL brother) was on some extended hiatus. But wait, we saw Luigi and Mario together in Yoshi's Island- or was that actually Waruigi, who was replaced by the evil Luigi by Kamek after the twins' return home? Or was it actually the evil Kamek who stole the good Waruigi and left poor Mario with Luigi, and... uh, none of that makes any sense.
Sorry guys, it's really late...
What's REALLY pathetic is tht some lamer will read my incessant ramblings and spread it all over the 'net, swearing up and down they have exclusive info on the plot to Paper Mario Story. ;)