Two shoot buttons, and one did nothing unless coupled with R1 Oh well, that's what sequels do - fancy up and tweak controls. However, in DmC it made ergonomic sense, given the rest of the controls. They just wanted to make the controls and functions as simple as possible for new players.
It's funny, because it reminds me of a discussion I had recently with a friend about how buttons and functions have come a long way, especially in RPGs. I remember Dragon Warrior for the NES where A opened a menu with all the functions for Talking, Opening doors, Using stairs, etc. It was a silly lack of contextualization that we ended up with later in pretty much every other game.
It's funny, because it reminds me of a discussion I had recently with a friend about how buttons and functions have come a long way, especially in RPGs. I remember Dragon Warrior for the NES where A opened a menu with all the functions for Talking, Opening doors, Using stairs, etc. It was a silly lack of contextualization that we ended up with later in pretty much every other game.