I wouldn't agree with that. Obsidian lack resources, so their implementation is usually quite bug ridden, which is what New Vegas suffered from. On the whole I think it's a much truer experience to the originals than 3 was. 3 lacked a certain grit and attitude you'd expect from that universe. It felt sort of like a post-apocalyptic Elder Scrolls game. Somewhat cookie cutter.
As a bias, I give New Vegas bonus points for using some of Mark Morgan's original compositions for the game, as opposed to 3, which just used Inon Zur's abortions.