I dunno if your comment is directed at me or the guy in the video, but I'll state my thoughts.
sorry if that was unclear. all you did was post a single link. my comment was totally fired to the guy complaining in the video.
wall 'o text
Personally, I don't have anything against Commando users. But then again, my main weapon is primarily the Barrett (please don't say you are one of the people that say that sniping is camping). What pisses me off is blatant misuse of the Barrett because of the semi-auto/instakill that the Barrett has and people run around unloading all 10 shots of the Barrett no scoped hoping for a kill...really hate how people do that...the gun was not designed for that and as such should not be used like that.
My second that I run around with is the M16 with stopping power. It is a very good, accurate gun and I use it on most maps that sniping is not a possibility. As such, I do have encounters with knife-class players. The thing that gets me about knifers though, is the hit detection. While it has been improved from CoD4, I swear that I die more times to knives that
miss more than knives that actually hit. What I mean is that there is a hitbox range that knife users can hit in. Sure they have their lunge, but the entirety of the space in front of them is NOT a killzone...only the specific attack box that the knife has an effect in. If I don't see the knifer coming, I die...simple. If I do see them, I try to get them to lunge when I'm not there...jumping, insta-prone, and whatnot. This is basic tactics...if someone is attacking you, you get out of their way. If this is not a possibility, the commando user has priority due to the invincibility the attack has. however, with the lunge comes cooldown time for the knife before you can re-lunge, so if you insta-prone or jump around them, then you have the opportunity to knife.
In close range fights...as was stated, don't bring a gun to a knife fight. Personally though, I tend to have my grenade set as throwing knife as throwing knife (in my findings) is the only thing that counters commando invincibility and will drop someone mid-lunge (which is quite fun to see as the opponent is still lunging and their body flies through the air...preferably off a cliff granted that you are playing Afghan).
Your gun is meant for long-mid to long range attacks. Snipers are meant for long to extreme range attacks. Sidearms are meant for long-close to mid range attacks (except for the magnum...that sidearm is godlike...or the Raffica Akimbo). Close range attacks are solely meant for the knife. That is how I play MW2 anyway and it does quite well for me. Knowing your effective range is extremely important.