Yes… it does. If 4-6 of my team are attempting to assault an objective and there’s 8-10 enemies defending and I can take out 4-5 of those enemies, I just leveled the playing field. Me.
That aside I cant tell you how many times I’ve single-handedly repelled an attack by sniping 3-4 as they’re running in Or held off reinforcements from moving from a captured objective to one that my team is trying to capture.
Ok but unless you’re spotting, using tugs, and other equipment then you aren’t playing the role.
This kind of generalizing is getting pretty old. It’s like saying “If you play Assault and don’t rez every dead person and throw down a Medical Belt every 3 seconds it doesn’t matter how many kills you get you’re not playing the role.”
The reality of the situation is that some players use equipment and weapons to more of their potential for the advancement of the team than others. It has nothing to do with the class and equipment/weapon they use and everything to do with the mentality of the player. I see just as many useless engineers and assaults as I do snipers.
If you’re talking about ammo/medical drops - just being near them will increase your ammo/health - supply drops allow you to change your loadout without respawning. Move to a supply drop and press E
Yes but they are a problem too. Although at least you can spawn on them. Snipers are usually off in really inconvenient spots. I’m particularly pissy about sniper though because most of them don’t have enough skill to balance their lack of other uses. When I play any class I play the full class although I prefer medic.
Yes for pick up weapons go up to them and press e. You should equip the weapon automatically.
Thanks mate 
A mav can turn a match around.
That’s my point. Most don’t use them.