I don't like their dull character animations, crashing engine and lack of cinematic atmosphere.
If i were todd, i'd take the TES team to bioware for a day and have the mass effect team spank their butts.
I hope Bethesda never pulls a Bioware type of storyline, it's always the same!
"You are a simple person, a big twist happens and now you are important, something evil is destroying everyone, recruit a bunch of idiots and save the world. TAH DAH!"
You could be right about storyline but in terms of realism and the epicness, mass effect is by far ahead of any tes or fallout games released so far. i'm talking about constanly changing camera angles in conversations, cinematics starting at some certain important points, hearing your character's voice.... these things make mass effect so distinctively enjoyable game than oblivion/fo3/fnv. (well they do for me at least)
EDIT: Just to compare the animation quality between Mass Effect 2 and Bethesda Softworks' latest game FO3. Leave your character in Fallout 3 and watch what he does, absolutely nothing! He doesn't move a muscle, except for his eyes. But in Mass Effect 2 Shepherd acts just like people, checks his left and right, stretches his legs and arms occasionally, shows potential behaviour of being bored because of waiting.