If the game is as good as Mass Effect 2 was, that is. 1.35 million units? lol, that's a laughable figure for PS3.
That is more than 60% the sales of the previous Tomb Raider, without having the first Mass Effect on the console and zero fanbase. The only reason that people will not buy it is because the game is bad and they know it in advance, but that is unlikely based on the developers behind it.