Aside from the OMA/DC/Commando plague. MW2 had the best balance in this area. Think about it. It didn't matter if you were using the Barret, an UMP45, a Spas-12, or a Tar-21. Every category was good and had great guns that could contend. There might be one or two decent AR's, but the SMG's dominate most weapons in this game.
COD4 had the M16/MP5, WAW had the MP40, BO had the Famas, MW3 I don't really know because I only played it for a couple weeks(was it that FMG9 or something before the patch?) But MW2, people had to argue on what the best gun was. Everything was good. I need that balance again.
You must have stopped playing before every match became Intervention spam/cross-map UMP45 sprays --- Get it right, do it nice. If you make a mistake, you're gonna pay for it twice. If you need it... got to have it. Get yourself a shotgun and bring it back home
Spas-12 was a secondary. If the shotguns were primaries it would be fine, but they kicked out any reason for a handgun or some of the Machine pistols --- Wants sequels to Timesplitters, Amped 2, Mirrors Edge, Sleeping Dogs, Burnout and Need For Speed Underground.
The guns were only balanced because of Stopping Power. I would rather have unbalanced guns and no Stopping Power to be honest. --- http://img834.imageshack.us/img834/1892/top102.jpg "You come at the king, you best not miss."
No CoD has ever had great gun balance to be honest, there have always been broken weapons in every game. SMGs in particular have always been kind of broken, the MP5 was beastly in 4, WaW was ruled by the MP40, UMP in MW2, take your pick in BO1 but mostly Kiparis, and again take your pick in MW3 but typically MP7. The trick is they changed the way guns are balanced in this one significantly, you have to think outside the box. There are no more dedicated semi and burst ARs anymore really, with select-fire every AR can be a precision or a full-auto weapon. Snipers are one-hit kills now for the most part, so they are more powerful than ever really. Add on to this the iron sights on the second bolt-action rifle (don't recall it's name, sorry), which you will see people start rolling once they figure it out, and snipers are actually really beastly. And really, don't discount the LMGs people, they tear people apart without rapid fire and are actually a lot more accurate than one may think. It feels unbalanced in this game simply because people are flocking straight to the SMGs and ignoring everything else, and they are pretty noobish weapons but that will change. People will open up more to other weapons I think, plus I expect a nerf to at least the MP7, they nerfed the AK74U in BO1 after all... --- MapleHoodOG