I could see Wenger trying to make some "Rotation" for the Team especially Arsenal have just playing European Champion League... But the my surprise, Arsenal SECOND line-up could still Performing Well in this game....
Don't forget Liverpool has also trying to make such a "Rotation" especially they parked Torres on the Bench...... But Finally being Held Draw by another Promoted Team (Birmingham City)......
Therefore, you could see the "Different Team Works Ability" between this two team are OBVIOUS.........