At the moment he deserves his spot ahead of a lot of strikers to have played for England in the last 12-18 months.
Does he? Rooney's a cert, and Cole and Heskey are likely to go regardless of form due to the type of players they are and the system we're playing. That leaves you with a maximum of 2 spots up for grabs and I certainly wouldn't say he's one of the next two deserving. Right now Defoe and Agbonlahor would take those 2 spots.