To grossly over simplify the whole thing to an extent.... I think that if Wenger wants to win these big games more often, he either has to decide to prepare for the opposition a lot more than he does......OR......he has a better team at his disposal and assemble a superior squad.

Previously he at least always had a world class forward to give them something to think about. The last season and a half he hasn't had that. He cannot knowingly go into seasons knowing he is two major players short (by admission of his own targets), not plan for the opposition....not blast anyone from the touchline playing poorly or needing to wake up and do all his talking all in the dressing room at half time and still expect to be pick up more points in these games.

If wenger puts a world class player in practically every 1st team position then fine......ignore the bloody opposition and tell them to just go out there and beat them up, but that is far from the case.