The launch did indeed go way way way better than BO1. Absolutely no performance issues, smooth as silk. Gameplay wise, if you look at the map design and feel, along with the player movement, it plays and feels way way more like MW2 than Blackops 1. The pace is very quick, lots of action. Soundwise the weapons, grenades, Explosions and hit registration sounds pack a lot of oomph, which is good. Dropping an airstrike leaves my Roccat Kave headphones shaking from the bass of the explosions, same with nades that land in close proximity. The Weapons feel powerfull as do the grenades, killstreaks etc.
The only gripe I have is with the lobby system. Those that played a lot of MW2 would know how irrretating it can get, as you fail to join friends games even on open NAT and open PARTY Privacy. You have to sit there and try and invite all your friends, they try and join you for about 50times untill it eventually goes through, and when it eventually does, you can't find any game so you have to start all over again. Very irretating.
The maps look good, Some of them are well designed with multiple paths to objectives, and most of the maps are tailored towards close quarters battles.