That's good... it's a fun game, worth playing. But the campaign is very short. Maybe 4 hours. I completed all but the last mission the night I got it. Next day, came home from work, popped the disc in, and was done faster than you can say "fox two."
Of course there's some replay value from the challenges and from going back and using different planes or completing the campaign on "Elite" (which still isn't that hard). The multiplayer is decent... probably my favorite part though is the co-op multiplayer. The missions scale in difficulty based on the number of players and each player can select which difficulty level they want (the difficulty only affects how much damage you take and how much ammo you're given). Some of the escort missions are insanely hard in co-op mode with half a dozen enemy fighter wings flying in from all directions.