Well to be fair to Wenger, he's always said that he sees Walcott as a striker eventually. His shooting has improved more than his crossing has, and such is his pace, that if he is played in behind, he will always get a shooting chance. He does keep his composure well 1 on 1.
Meh, I'm really bored with this Wenger thing, Vela is a striker, lets train him as a winger, same with Eduardo, it worked with Henry, largely because Wenger did the same thing with him at Monaco, a kid they brought in as a ridiculously talented striker he turned into a completely average winger, then when he got back to Arsenal made him a striker again and his game came back.
Walcotts a horrifically bad winger, he has nothing in his game that suits playing on the wing, his crossing isn't better, he still doesn't get his head up, in preseason and in the first two games he's missed multiple ridiculously easy chances to set up a goal because he can't make a VERY simple pass, if its because he doesn't look up, or he's incapable of passing doesn't matter, you're only good if you have both, not just one.
he was a striker, he was always a striker, and Wenger bought a striker, then tried to play him as a winger, likely because he almost solely buys central players these days.
This is as far back as forcing upson to train as a left back for years despite 3 left backs being ahead of him. Upson would probably be at Arsenal, first team and a much better player if he just stayed as a centre back. Walcott would be a better striker if he'd only trained as a striker in the past 3 years.
As for the way our wingers play, yes, in theory they should get in and spend a lot of time in the box, but when they aren't he's completely hopeless and against any half decent team the wingers are expected to get back, defend the wings and will be playing most of the game around the half way area, where he's hopeless.
His shooting also hasn't improved, all 3 shots were weak, slow, and not brilliant, almost any other keeper in the league would have saved at least one, probably two of Walcotts, Chamakhs quite easily.
He needs a run in the team, playing 4-4-2, even then I'm not sure he's good enough, but its without doubt he's not good enough for the wing. He's had a couple good games ever year, Cygan scored a brace once, doesn't mean he can do it every game, and doing it against potentially the worst team in the league means next to nothing. Its when a player can do it almost every game they can be considered good. Problem is he was crap last week, crap for England, crap in every single game in preseason. If he'd been good for the last 8-9 games and then had a great game, thats one thing, awful for 8-9 games and decent against the worst team we'll play in a while, still making huge mistakes, isn't a sign of a turnaround.