True that, he definitely carried your team through some tough spots, but it seems to me that he wasn't able to inspire his team through the season (a major part of that may have been personnel, mind you..). But many also argue that a lot of Gerrard's deficiencies were masked when you had Xabi Alonso sitting behind him. Gerrard was always more suited to the attacking game, and when he was called upon to be the defensive leader, he just tapered down a bit.
Definitely one of the most influential midfielders you've had (he was Liverpool, so I utterly hate him, mind =P), but probably not the most complete midfielder you've had. Had Gerrard been pushed ahead in the hole, and a proper defensive midfielder been bought, he'd probably have had a greater influence on the game.
Still dislike the farce made on his retirement, mind you. I don't mind the fans, but entire ****** channels were dedicated to Gerrard throughout, which was quite ridiculous to do for any player :\ But really, Liverpool would probably have benefited a lot more if he was still kept around, mainly for the superstar name and his presence in the dressing room.