Just finished the SP and its awesome! So is the zombies mode! But for multy...
They made it the same for PC as for console. You can't search the servers like in BO, you can't rent a server, it just adds you into a game with the gamemode you choose and then when it ends you vote on the next map. I'm dissapointed about that
Also the spawns are bad every once in a while. But other than than the game is good!
The SP is like the best thing. Your choices make a diffrence in the ending, you can decide who you keep alive and who you kill, the special forces missions are good too but kinda hard because of the kinda stupid ally AI. I'm probably gonna play the SP many times later, like try to complete it with the best results and then another playthrough with all the stupid choices (if I didn't chose them already