It's a relative term.
3 million copies of Bayonetta sold = incredible success. 3 million copies of Super Mario Galaxy = Crushing failure. And Bayonetta probably cost more to create. Just like the Playstation brand. 100 million plus sold vs 50 million sold.
It also comes down to profit. As long as the product makes money, it's cool. If it sells very well but doesn't recoup its costs then it could still be considered a bomb.








