There are basically three types of people who post here: Those who played the original Fallouts first and refuse to admit that anything that isn't a turn-based spreadsheet game is a Fallout game, those who played Fallout 3 first and refuse to admit that anything that isn't a first-person dungeon crawler with guns isn't a Fallout game, and those who like New Vegas the best regardless of when they played it.
For the most part those camps have agreed to stay in their respective sub-forums, and Series Discussion is kind of a neutral zone between the FO1&2 and F:NV camps. Doesn't really surprise me that you're getting a lot of pro-NV responses here. What does surprise me is how many more votes FO2 is getting compared to FO1. I've always considered FO1 the more cohesive and focused of the two games, and it made a much bigger impression on me. Guess FO2 is more popular than I thought.