Never said some of the criticism wasnt valid, but honestly, yours not really, my oldie E8400 runs arma 2 without any issues, i dont find the gameplay incoherent, its actually great for a realistic shooter and while its true the game was released with a broken campaign i never cared about that, if i wanted to play singleplayer i'd have 55436623 other games to choose from, what makes the game worth buying is the multiplayer, which has always been playable
I hate when people release completely broken games but in arma 2 case it just was worth it, there just isnt any game like it and BIS did a great job at fixing the game by releasing beta patches almost every day for the last 2 years, if arma 3 also comes out broken i'll still buy it, simply because i know that after a couple of patches the game will be pure awesomeness.
Hopefully i wont get bored of RO2 before arma 3 comes out, so far there rly isnt any other shooter that could keep me playing for so long