I have a 5Ghz i7 2700k and a pair of 570s at stock, and my framerate went up and down between 120fps in Lion's Arch caves and 30fps while standing above a crowded castle gate in WvWvW.
The average 'experience' I was having though (I play 95% PvE) was a solid 70-80fps, with 60ish percent of GPU usage. Group events where less framerate-dropping than large WvWvW crowds of course (FPS in the 50's). Maybe those people you're talking about are only into solo PvE ?
EDIT : figures come from fraps, resolution 1920x1080, all settings to high/ultra, no supersampling.
Indeed, solo PvE isn't too demanding. Without supersampling, many cards will achieve 40-60fps if backed up by a good CPU.
Aside from that, it takes a beast of a machine to truly max the game (supersampling) well, and even more to stay above 30-40fps in large WvW fights.
GW2 is a very, very variable game by it's nature. So people will give performance figures all over the shop. Only trust figures that have a very good and detailed explanation behind them. I tend to create framerate/time graphs, with explanations of the area and what kind of battles occured if anything usual happened with the framerates at any give point, when i'm actually doing a proper performance post for example.
In a nutshell: if someone says '60fps max' with nothing else. Ignore them or assume that it's the least demanding scenario. Simple. I'd actually go so far as to ignore anyone that doesn't specify if max includes supersampling, because so many people seem to think supersampling doesn't count. It does.
I'd be much happier if people stopped trying to stroke their e-peen by giving numbers that are completely out of scale with what the reality is because they quickly F11'd when sitting somewhere with high FPS anyway, instead giving values of large (20+ player) battles with everything truly turned up to maximum.
Edited by The Comfy Chair, 23 August 2012 - 05:54 PM.