They are similar in ways, but in BFBC2, whilst air support is powerful, it is very easy to take down, and the same goes for the tanks. There are some levels (Arica Harbor for one) which are vehicle centric at the beginning, attackers getting a huge load of tanks, quads and jeeps, but the few tanks and multiple rocket launchers at the defenders base, so they counter each other. If you don't like the vehicle based combat, you can always just play some squad deathmatch (i think thats what its called) where there is only one light tank, and four infantry teams.
Games 100% Complete
TES IV Oblivion, Fable II, Assassin's Creed, Assassin's Creed 2, Lego Star Wars TCS, Call of Duty 4, Call of Duty World at War, Modern Warfare 2, Call of Juarez: Bound In Blood, The Saboteur, Star Wars TFU, Civilisation Revolution, Dash of Destruction, Dead Rising Case Zero, Halo Reach (w/o DLC), Metro 2033, Mass Effect 2 (w/o DLC), Call of Duty Classic, Mass Effect
The Orange Box, Battlefield Bad Company 2, Call of Duty Black Ops, Medal of Honor