That's absolutely impossible. SMM2's ceiling is 10 million. It's a concept that has inherently limited appeal compared to a true, new traditional 2D Mario game.
Eh, this has a full Mario game worth of content (just in story mode alone) and there is no "new" 2D Mario game on the system yet, and I don't see there being one for at least 2-3 years. I think this is the new standard for 2D Mario and this is probably the best chance for SMM to break sales records and get reasonably close to NSMB type sales.