Just as with classes, weapons can affect different play styles. I main a hunter, but haven't played pvp in months. Started up again last week. I suck. I get on my titan and start working a Thorn, I'm going 2.0 kdr, 3.0,even a 4.0. My play style seems to work better on a titan for me. And changing the perks around on my Thorn, I can use it like the beast it is