You're right, and hypothetically it all lines up - but it wouldn't have played out like that because everything was being played through him and we went on a 9 game losing streak. Who knows what would have happened if he didn't get injured - we'd either be in the Champions League if the glass is half full, or if things kept going as they were when he was on the pitch - relegation fodder.
He is an average Premier League winger with little end product and a whole host of fancy tricks he learned mugging off defenders in the lower leagues.