In an even match, clinical finishes from Adam Birchill either side of half-time clinched the points for the Gunners.
Yet Stuart Taylor was the busier of the two keepers, Arsenal had to clear off the line and Dean Marney saw a header bounce to safety off the crossbar.
"I'm very disappointed," said Clive afterwards. "It's always a big game against Arsenal and the biggest disappointment is that we didn't really stamp our strengths on it. We haven't showed what we're capable of.
"We've discussed it, the lads know it and I suppose you also have to give Arsenal credit in the final third and their quality in the finishing department.
"They had periods of possession without being too much of a threat and I can't remember Lars having too much to do. I was happy with us defensively.
"The difference was in the final third and they took their chances whereas we didn't take ours."
Clive Allen couldn't hide his disappointment after our reserve defeat against Arsenal on Monday night.