Treyarch made CoD5 (which failed) and they are making black ops which will basically be the GOOD sequel to CoD4.
Mw2 is a fun game but there is A LOT of abusable features that should of been fixed. (One man army, no dedicated servers etc.)
black ops which will basically be the GOOD sequel to CoD4.
Uh...Black Ops takes place years before the events of Call of Duty 4. It is the Cold War Era, hence the name Black Ops.