I have heard enough about Obsidian for the time being!!
Don't get me wrong, New Vegas is a fabulous game. It is one of my absolute favourites from last gen, Is it better than Fallout 3?? I don't know I couldn't possibly decide, I love them both. In many ways NV is a superior game, the story is very interesting, possibly better than Fo3, possibly. Companions were better, new Factions, Crafting, Weapon Mods, Iron sights etc. A lot of new things went into the game which expanded on Fo3 in a big way. The addition of hardcoe mode was welcomed by many, gambling in the casinos was fun, multiple ammo types was a good addition. In short New Vegas was a success.
Now Obsidian are excellent decorators, they came in to Bethesda's House, rearranged the furniture, slapped on some new wallpapers, put a carpet down, not satisfied with that they built an extension. And what they made was awesome. I think Obsidian are great developers who have some great ideas and a good design style.
They are not 'better' than Bethesda.
They may have re-decorated very very well, but BETHESDA STILL BUILT THE HOUSE!!!!! I don't think Obsidian could have.
It's very unfair and miss-guided to say that Obsidain are better than Bethesda because NV was 'better' than Fo3, of course it was it came out after, it was built on Fo3 for Todd sake. Would it be fair to say that NV wouldn't have been as good if Beth had made it? I don't think so.
That being said I really do hope we get another Obsidian Fallout building on Fo4, the potential is utterly huge, I'd like to see what they would do with it.