Modern Warfare 2 & Left 4 Dead 2.... both SUCK?

Ok, I know MW2 is "good" probably "great". MW1 was a great game...tons of fun.....and MW2 is supposed to be "about" the same as the first one. BUT, considering MW2 is already the most sold game in the world (or something like that) I think the people who bought it deserved more than 5.5 hours of single player......and perhaps a little support for multiplayer, that's all I'm saying.