The League One outfit were thrashed 6-1 at the Emirates Stadium on Wednesday night and were consequently dumped out of the Capital One Cup.
While Robins admits that there is no shame in losing to the Premier League giants, he isn't happy with the scoreline.
"I think for us it is easy to be hypercritical but it is difficult to be that when you are playing one of the best teams in Europe - regardless of the players he has put on the field, they are quality players," said Robins.
"It is disappointing to lose the six goals, there is a danger that you look at it and think that is acceptable, that isn't acceptable but it is building it up.
"We ran out of legs and that is something we have got to work on."
Coventry travel to Oldham Athletic on Saturday.