While Emery got off the mark, West Ham boss Manuel Pellegrini is still waiting for his first points as this was the third defeat of the season.
"I think, from the game today, fans will see we are on our way". Welbeck, a late substitute for Pierre-Emerick Aubameyang, sealed Arsenal's win in stoppage time after Bellerin's fine run and cross gave him time and space to score from close range.
"Well you never know about that, but for me we must make it as a team, not because we have three players who played at Arsenal", he said.
"Today he was here, I told him to come in if he feels better and he feels better today and before the match he was with the team".
The Gunners suffered back-to-back defeats versus Manchester City and Chelsea in a tough opening to the Unai Emery era and Ozil is not in their matchday 18 at Emirates Stadium, having been hindered by illness over recent days.
Wilshere is looking to relaunch his career at West Ham after several injury-hit campaigns with Arsenal, and Pellegrini believes the Brit can be compared to the former Juventus and Milan playmaker.
"There are a lot of reasons why, in this minute, we are trying to find the best starting XI to win the game".
There were plenty of positives to take, though, not least the amount of chances they created.
Commercially, it was a great deal for them, but ever since their first game against NK Domzale in August 2016, supporters have been crying out for a move back to Upton Park.
The midfielder said he doesn't pay attention to criticisms because he knows if he has played bad or well.
"We were unlucky to concede an own goal that put Arsenal on top".
"Soon this team will win more games than we are going to lose".
"We have Lucas Perez and Carlos Sanchez who have only been here for two weeks, so we have a good squad and it's impossible, when all of them are fit, to play them all", the Hammers boss added.
"We need to improve as a team in defending, attacking and mentality, so a lot of things and against a big team like Arsenal is the only way to improve".