The Watford striker played an influential role in downing the Gunners at Vicarage Road, scoring a 71st minute penalty to draw the Hornets level after Per Mertesacker had opened the scoring before Tom Cleverley secured all three points with a stoppage time strike.
Wenger's gave up a 1-0 lead as Troy Deeney netted from the penalty spot in the second half and Tom Cleverley scored an injury-time victor from a rebound at Vicarage Road.
But Deeney did not subscribe to Wenger's view and felt basic physicality had spurred his side - something Arsenal are often accused of being unable to deal with.
"I've heard Wenger's already saying the penalty is the reason they lost", Deeney told BT Sport.
"Look, it wasn't a penalty yesterday - that was never a pen for me - but that wasn't the reason why the outcome was 2-1".
But on Satuday they were up against Arsenal, the pass masters of that type of game, and getting little joy until Silva sent on Deeney just after the hour mark.
"I totally agree with Troy Deeney [who said Arsenal lacked the "cojones" needed to win]". I didn't even have to jump, actually - I nodded it down.
'I came on and jumped with [Per] Mertesacker, the crowd got up and they all just backed off'. At the end of the day they scored.
"For me as a player I just think, "Happy days". Earlier this season, former England defender and current pundit Gary Neville said they "deserved a battering" during a dismal loss at Liverpool, calling the attitude of a number of key players "disgraceful".