Slight Spoilers Ahead.
I just finished Deus Ex last night, and I had one major issue, no matter what choices you made in-game, you get to pick the ending you like best. All four endings you can pick from are all the same cutscene of stock-footage, only with a different narration by Jensen.
How is this any better than Mass Effect 3's ending? I have not heard complaints about this issue, which I think is a major issue. At least Mass Effect didn't present the endings to you in a "Chose Your Own Adventure" style, it based the endings off of the choices you made(I know all it does is change the color of the ending, but still)
Why are more people not taking issue about this? I guess my main question is, why is it okay for us to riff on EA and Mass Effect 3, and not Eidos and Deus Ex 3?