User blog comment:WaterKirby1994/Why Generations Shouldn't Have Been Praised/@comment-31555858-20171114140046/@comment-31555858-20171114162000

All forms of SA2 sold 3.2973 millions, Generations - 3.804 millions. The first Adventure did outsold SG though, you are right. And I forgot how Shadow the Hedgehog sold a decent amount of units as well. Yeah, that doesn't make much sense. If it's not about units, I don't know what is SEGA's priority then.