Did people really hack the game?
Every version of Evolution has been hacked. Whether it be the leaderboards (fake scores), or cheats in multiplayer itself.
I have heard assertions that there are multiplayer cheats for the PS3, but in my experience those cheats, if they exists, are not so widely exploited that my enjoyment of the game is diminished.
I do believe there are a few who either play a lot
of matches against bots only, or they have found hacks to set their numbers, ensuring their top spots on the leaderboard. I really don't care about the state of the leaderboard.
I also believe that, cheating notwithstanding, T:E multiplayer has a lot of room for variation in skill and a lot of depth. When I'm getting owned, it's not because my opponent is cheating. It's because my opponent is better than me.
(At least in PS3-land. I can't speak about other platforms.)