Dunne said: "Credit to Orient - they've got their five wins, but I think anybody here would say we didn't deserve to lose the match.
"We've done all we can to at least draw it.
"We started the game really well and then they got into it, which you would expect.
"I felt our response to going behind was good and we got a very good equaliser - I don't think we deserved to lose.
"It was end-to-end and what I think was disappointing was that we had worked all week on how they scored their two goals.
"It really frustrates me because we knew they'd scored a lot of goals from a long ball from the goalkeeper that is flicked on with the other striker getting on it or second phase from set-pieces.
"We switched off and allowed (David) Mooney and (Kevin) Lisbie to be free in the box and you can't do that."
Orient took the lead after 13 minutes when Dean Cox picked out Mooney in the area and the Irishman controlled well before lashing home against his old club.
Sam Walker denied Lisbie before Colchester equalised 10 minutes before half-time through Jabo Ibehre, who slotted low past Jones from just inside the area after Craig Eastmond had picked him out.
But Lisbie headed home the winner at the far post from Cox's cross, just after the hour.
Colchester had a penalty appeal rejected when substitute Drey Wright went down under Scott Cuthbert's challenge in the area and although substitute Batt fluffed a late chance, Orient won again.
- Sports & Recreation
- Kevin Lisbie
- David Mooney