According to Wikipedia, the core Super Mario franchise has sold 311.46 million copies, as opposed to 280 million for Pokemon. And that's even excluding the offshoots like Mario Kart, Mario Party, etc., which have all collectively done 528.52 million.
List of best-selling video game franchises - Wikipedia
Now that's not necessarily an indicator of what the most recent game sales might be doing, but I would say it's a fair indicator of how much brand awareness each franchise has with the general public.