Last Chance was fun, though half the time, your teamies completely ignored you and left you to bleed out. When that happens, I'll usually cook a frag or throw a TG and kill myself, denying the enemy a point. I actually kind of miss it, but won't deny that I'm glad it's gone. Was always sort of a pain to deal with when you weren't the one down.
As for which game is better, BlOps had the better maps. BlOps2 maps are a little like MW3 maps in that they are all very flat, with no clear sightlines anywhere, littered with junk and no perfectly defensible positions anywhere. By flat, I mean they usually don't have more than "first floor" and "second floor" with few maps that have "basements". Add in all the boxes and vehicles laying about the map with the fact that "cover" leaves you half exposed if it doesn't cover all of you and it's a rushing-friendly game. Some of us do like sniping from a high point on the map without worrying whether or not Thomas Guhn is gonna crawl out of the sewer pipe, bypassing all defenses and shoot me in the back with his suppressed target finder PDW.
Marksmanship Rule #1: TAKE YOUR FINGER OFF THE DAMN TRIGGER, MAGGOT!