Meh, we can have this argument forever. I still think Ghost/Assassin has its legitimate use when the point is to throw off the UAV-spamming campers, as no amount of gun skill can overcome their element of surprise. You have to check every corner while they know exactly through which doorway you're headed? Even a player twice as good as Sandy with three times his connection is going to run into problems. Meanwhile, others are going to think that Ghost/Assassin in any capacity is going to make you a pussy.
I don't even care about weapon choices anymore. I was once among those proud of not using the Famas in Black Ops. But after one and a half years of listening to no-talent Battlefield players whine about how anything and everything that kills them is overpowered, and now already having been accused of being a bitch with every single weapon type (ARs have too much range, SMGs are spray and pray, LMGs have no recoil, you don't have to aim with snipers and shotguns, blah, blah, blah) in BO2, I really don't give a shit anymore.
Then again, my perspective might be influenced by the fact that I play CoD exclusively solo these days, as my style of playing for a few minutes here and a few minutes there is not practical for partying up. Therefore, I typically have to put up with random team mates who generally won't be much help, while I often play against parties whose idea of team work is coordinating their camping.
If I can sneak through some UAV ambushes and then spray down the campers with akimbo Rafficas for extra lulz, to listen to them cry to their buttbuddies, that's entertainment right there. At least I can back it up with capture and defend stats for the most part rivaled only by members of L3
E.g. Hardpoint on Nuke Town, with no perks or attachments, but being a noob with the OP FAL