There's a few may disagree with me but - planetside 2.
If you play in the big zergy fights it's very possible to have plenty of good times with the basic loadout given to a heavy infantry. Shoot rockets into doorways you saw enemy around a while ago, make gratuitous use of the "spot" key and do silly aggressive moves with the shield active (you'll usually get 1, maybe 2 before their mates see you and drop you).
I've played.... lots of hours. I still use the original heavy assault weapon to good effect. You DO need to put your first few cert points (gained from experience) into improving the armour of your selected class and yes, technically, up to this point you ARE at a disadvantage to everyone. Beyond this though, stuff gets fairly even. One or 2 specific weapons are quite OP in their weapon class, otherwise stuff is situational. A decent reflex sight (or a nightsight/infra-red, termed as "HSNV" scope) is pretty much a must too. The first couple of armour upgrades and sight/scope will take you about 3 hours play in a decent firefight though.
Vanu or NC have a VERY slightly edge on overall weapon selection (mostly because their shotguns and SMG's have big pro's and big cons while the TR stuff is all fairly even and mundane as a result).
You CAN happily spend a LOT of real hard cash to get to the better stuff MUCH faster. It tends to unlock weapon systems though, you still need the certs to upgrade them and make them worth using so real cash just gives you more options, it's certs from experience that increase your characters absolute strength relative to others.
If you don't like a learning curve though, go with something easier, you WILL be cannon fodder until you "find your mojo"
Once mojo arrives though, it's very even/fun
