The North London derby ended in a 2-2 draw which is arguably a less than ideal result for both sides' Premier League title hopes.
The Frenchman was sent off when the Gunners were leading 1-0, and his dismissal appeared to have an immediate impact as Spurs had turned the game on its head within seven minutes.
And while Alexis Sanchez's late equaliser saw the points shared, the 2-2 draw was arguably less than ideal for both sides. Nevertheless, Welbeck appears to have claimed that Coquelin should not take the blame for the way the game unfolded following his red card.
"We should be showing heart in every single game. When we went down 2-1 at Tottenham it wasn't positive for us and we had to dig in and we got a goal in the end and it is a good a result for us - with the red card, before that we were really looking to go on and win the game," he told the Mirror.
"We were comfortable at the time but I don't want to pin any blame on anybody, we are a team - we lose together, we draw together and we win together.
"We didn't win the game and that was something we wanted to do so it is a disappointment."
As well as potentially costing his team bragging rights against their bitter rivals, Coquelin's dismissal appears to have severely dented Arsenal's title aspirations.
With nine games to go, Arsene Wenger's men are eight points adrift of league leaders Leicester City, and could now drop down to fourth in the table as Manchester City have a game in hand over them.
And while Welbeck will suggest that Coquelin should not shoulder the responsibility for their failure to win, the way that the momentum completely switched following his exit would suggest that had he remained on the field, they may have had a better chance of drawing level with Spurs in the table, and moving to within six points of the Foxes.