Television replays appeared to suggest there was minimal contact, with Wenger adamant that the challenge was not worthy of a penalty offence.
Deeney is not the first person to question Arsenal.
"I came on today and jumped up with Mertesacker - I didn't even have to jump, actually".
"The crowd gets up - "Yeah, we've got somebody who can win it" - and they all just backed off".
"For me, as a player, I just think 'Happy days".
Former Premier League referee Graham Poll has claimed that Arsenal should not have had a penalty awarded against them in their 2-1 defeat to Watford on Saturday. But substitute Mesut Ozil failed to double the lead when put through by Alex Iwobi in the second half on 70 minutes.
"After that we were punished by a bad refereeing decision". "I think we became nervous and we lost our composure when it was 1-1".More news: Pentagon looking into reported death of Islamic State's 'White Widow'
"We panicked. And we stand there with defeat". He shouldn't have given the penalty, but you cannot blame him when players think they can get away with diving.
'We have only lost once this season against by the far the best team in the league (Manchester City) so we can go there with confidence, ' Cleverley told the club's official website.
Mertesacker does not know if the penalty was worth it, but bemoaned the fact that Arsenal became wasteful, as Cleverley scored a late victor.
Troy Deeney scored from the penalty spot in the 71st minute of the game to draw Watford level.
Now the 13-cap England worldwide wants another scalp next Saturday as Marco Silva's side travel to champions Chelsea, sitting ahead of the Blues in the table.
He said: "Credit to the manager".
'That's what we did really well in the first half, where we regained possession, kept possession, that was really good.