He didn't ask who should have been dropped in the first half of the season for Oxlade Chamberlain. And there have been absences this year - Theo has had a game or two missed for minor things and Gervinho missed three games with suspension at least before the ACN). So far Theo has played in 27 of 32 games, Gervinho 20 of 32 and Chamberlain 9 of 32. And even if no one had been out injured/suspended or whatever, our history with players missing time suggest that it's likely that there will be injuries. If we have 25 games left this season (or so) Chamberlain should play in 20 at least, 15 each for Walcott and Gervinho. But who's available will play a big part in who plays the most.
I prefer Chamberlain to the other two and Gervinho over Walcott but I think they all will play regularly. Despite the stupid and disastrous subbing of Chamberlain for Arshavin, Wenger said that 2012 was going to be the time for Chamberlain to shine. Let's hope he sticks to that. It's quite evident he's a special player and we have very few of those. He's also a cause for hope, and there's very little left of that too.
We also have Arshavin. But then, who gives a shit about him anymore. He may just as well be dead.