The 2005 Gen Con Indy had an attendance just over 25,000. Half a percent.
Guess they better cancel that too, eh?
Point is, numbers are relative. Saying there are 5 million players (and I love Paizo but I'd like to see their hard data) doesn't mean these are all 3e players or, more importantly, players still shelling out money for WotC's products. I know players & DMs who only play 1e using their old books and I know players & DMs who don't buy from WotC, but they would probably be counted into that 5 million. How many of that 5 million actively buy WotC products? What percentage would
be considered successful for a gaming magazine (especially as the two being discussed are probably the popular ever)? It's all relative.