To answer your question, Defoe should have been in the squad over Wolcott from the start, but it looks like hes staying now Rooney's scoring scissor kicks in training.
I have always thought Owen was over-rated. When he finally moved out of his Anfield comfort zone he was just a bit part player at Real. The less said about Newcastle the better.
Hes constantly touted as one of the best strikers in the world but he goes missing sometimes for entire games, his Hungary performance was shite but not suprising.
With only Rooney falling into the world class forward bracket Owens the best option we have atm even half fit. But he's nowhere near the class of Ronaldo, Henry, Shevchenko, Rooney, Raul, Adriano etc etc. Owen will be first on the team sheet no matter how crap he plays and with Sven taking a crocked player and a 17 year old as the alternatives its even more certain.