Obvious. Sniper has the longest range in the game while pyro is practically melee.
But the problem is sorc... you dir for pyro, sniper, smashers, etc... etc... Sorc is trash.
Guys.. this is a great lack of knowledge about the game. Socs / Sages die with two or three hits! The only function for them in pvp is the bubble... They can still live until the end of bubble.