I would give New Vegas a 9.8
I have been fortunate only to encounter very minor glitches that really didn't hinder my enjoyment of the game. I realize many others have had severe problems and I would certainly feel ripped off if that were my experience as well.
The level of depth in the story elements and the sheer number of interesting characters in this game dwarf any other game I have played, including Oblivion (if you compare it to Oblivion without any DLC or mods).
Games like CoD have MP, zombies, campaign, combat training, arcade top down shooter, and even zork, where as Fallout is just the open world.
"
just the open world"?
IMHO, the open world aspect of FNV is what makes it such a great game.
I've logged over 160 very enjoyable hours on my first playthrough and I am just starting to get into the big events of the main quest. I have never even set foot inside the Lucky 38. It is evident that a massive amount of work went into writing and developing all the story elements in FNV and I'm grateful to the team who put it all together.
There are many excellent games out there that are simply designed to be completed in 15-20 hours of gameplay. FNV is massive and a very different sort of game. I have played some great games such as CoD World at War , ME1, ME2, Bioshock1, Bioshock2, and finished them over the course of a weekend or two and haven't had any inclination to play them again. I imagine I will probably reach 200 hours before completing my first play through of FNV and I'm sure I will enjoy replaying the game several times and making different faction choices and different character builds.