Walcott forced an own goal by Denis Polyakov shortly after half-time and Olivier Giroud added a fifth from the penalty spot before Wilshere teed up Mohamed Elneny for the sixth as Arsenal swaggered to a victory that provided an ideal tonic after a 3-1 home defeat to Manchester United in the Premier League.
"You can say the opponent was not at the level of the Premier League and I would agree with you but you can only do your job and that's what we did, in a convincing way with remarkable spirit and finished well the job in this group stage".
Unlike the hosts, Borisov have it all to play for in north London.
"I believe that it was done in a stylish way and in a technically-high quality game from our side", he said.
"I have to consider the interest of the player but dominant of that will be the interests of the club and if you can combine the two it is better still but first is what is important for the club", Wenger said ahead of Arsenal's Europa League game against BATE Borisov, as quoted by the Daily Mail. "For 70 minutes he was dominant in midfield on the creative side and that's very good news for us".
Wenger's men started with four at the back for the first time this season on Thursday night in front of a below-capacity Emirates Stadium.
"If we are called upon from the bench we have to be ready and support the boys who are playing".
While the official figure was 54,648 it is understood less than 30,000 fans were present to see Arsenal run riot with an emphatic and easy 6-0 win.
"It's true that you prefer the ground to be full, but tonight there was not a lot at stake on the competitive side".
"That doesn't mean that the players who do not play, you respect them less".
"You respect the decision of your fans".
The result did not affect Arsenal's position as winners of Europa League Group H, but it condemned BATE to fourth place and an exit from the competition.