too similar in my opinion, no one to feed the ball in to them, though they'd be perfect with Ozil behind them, their movement and positioning would give Ozil or someone like him space to pick a pass as the defense has to stay with them..
Berbatov-Owen is one pairing i'd like to see more often, i think even Hernandez-Berbatov should work too.
Berbatov playing through balls would work brilliantly against teams who go on physicality, don't have the quickest CB's around. Like Blackburn or Bolton.
I think with Chicharito he prefers playing against defences who push up but he will still be effective against the teams who put 11 behind the ball because of his movement. He can get away from defenders with his pace, could be someone to get us lots of penalties, defenders will be holding onto his shirt all season.