the only things I can say (from friends/family experience) is that 2D Mario games are easily digest by the mass market.
My sister is happily playing New Super Mario Bros Wii with the only aim to (side scrolling) get to the flag pole.
She has no clue on how to play Galaxy, she did give up after the first 20 minutes however, 2 years later she still playing MARIOBROSWii.
this may be the only explenation on the difference of sales.
If Mario Galaxy it is or not a real Mario Game, i do not know!
But if this guy is stated that is considering an hardcore Mario game only a 2D game than we must apply to his rules in his topic.
Switch!!!







