It's funny the way opinion shifts on here. I always think there's a theme about whatever we did in the past was better. This intensifies when we're having a poor season. Most recently there's been a theme of 2008 being some sort of divine tiki taka glory, with Rooney, Ronaldo and Tevez out-Barca'ing Iniesta and co. In reality, Tevez massively split opinions, lots wrote him off as a work horse with a heavy touch and a poor return in front of goal. Our midfield was a source of constant woe and people used to hark back to how much more exciting Ronaldo was as a winger and wonder why Fergie inisisted on playing Rooney wide left with Ronaldo up top. Not to mention Carlos Querozzzz having a few extra 'z's added to his name because of our incredibly conservative approach in Europe.
Which brings me back to Rooney. I remember when Fergie started playing him as a number 9 and there was outrage at forcing him to play a position that didn't make best use of his talents. People said it was a waste of his ability to score from range, to create goals and orchestrate play from deep. Besides, he was a crap finisher anyway. Thus said the caf.
Now there's an almost unanimous consensus that playing him as a 10 is a complete disaster. That he's a natural as a number 9 and it's ludicrous to ask him to play deeper. The reality, as always, is more complicated. Rooney started this season as a 10 and was sensational in that role. Rolling back the years to his very best performances in that position. Of course, most of the rest of the team was miles off the pace, results didn't go our way and the rot set in throughout the team. Not long after, Rooney got injured and is taking a few weeks to get up to speed (which is usually the case, when he's out for any length of time)
I'm rambling now but my main point is that Rooney is quite capable of playing in either of the two roles up top. And playing very well. It's far too simplistic to imply that he must play in one position or the other. As you will all see when he gets back into his stride and starts hitting some form again.