This doesn't mean anything about how the game was designed - it just means that EA chose to use widescreen mode when recording gameplay for advertisements.
Bioware makes their own promo videos and screenshots, and they've showed it in 16:9 at press event Bioware themselves hosted.
Sure I can't prove they designed for 16:9, but at the same time just cause it's vert- doesn't mean it
wasn't designed primarily for 16:9 displays. If you think it was designed for 4:3, well you're entitled to your opinion, but given that it started life as a 360 game and given how they've showed it off, I think it's safe and logical to assume was designed first and foremost for 16:9 HDTVs, the 16:9 FOV is the intended FOV, and taller aspects are really seeing more than is intended.
If you have a particular FOV frame in mind, common sense says that you wouldn't deliberately "add more vertical space" for 75% of your audience.
Yeah you add black bars and then you get that 75% of the audience bitching about the black bars a la Assassin's Creed. It's certinaly possible that they didn't pay a lot of attention to the experience on taller displays just as many developers have ignored the experience on wider displays.
------
Anyway, chillax. I'm not asking for the grade to be changed. Even if it was designed first and foremost for 16:9, I still don't think that makes vert-/+ behavior ok. They should be adjusting the FOV based on the aspect. I'm just saying that widescreen users can make a fairly confident bet that they're not getting a diminished experience from what the developers intended. Certainly at the very least, you're not getting a diminished experience versus a person playing the 360 version on a 16:9 HDTV - which I'm sure would be what the developers would indicate as being the optimal way to play the game on that platform.