It's because in GW1 you couldn't pick which server you played, you just clicked the game you want to play and it finds the match...not sure what it does but lag is definitely worse in GW1 but at least you can find people...that and games can start with 2 people. In GW2, each continent has it's own server well North America has east and west...but you can switch to whichever server you want. Lag is almost zero on GW2 but it's impossible to find a game other then Turf except on the Europe server. My default server is North America east, but I play Europe through the day because you can play mixed mode and team vanquish with full games...my ping is listed as 115-120 but gameplay is still perfect lag wise. So either they need to combine some servers, or dump most of the game modes and allow games to start with two people.
If I sit in a game of team vanquish for 30 minutes, at peak time on North America east I might be lucky enough to have 3 others wait around and start a game but most likely you get 2 or 3 and they won't wait for a 4th to join. If you are lucky enough to start a mixed mode game then you have to be punished with 2 games of turf right off the bat even though that game mode is always full if you care to join it. We need to face facts in GW2, 90% want to play turf but for those of us that want to play anything else I think we need to settle for mixed mode.
I defy anyone to try and have a game of anything besides Turf Takeover on any server besides Europe...have fun because it's impossible. This is on PC by the way. And Europe is only busy between 9am-4pm AST.