McCartney said: "We conceded in the 45th minute again and obviously that has been able to lift them the lift in the second half. We found it hard to break them down and they have scored another breakaway goal in injury time. Two-nil looks harsh at the end of the day."
"They are a tough team to break down," McCartney also told whufc.com. "It is something like 12 games unbeaten now and in the last couple of years they have been pushing for those Champions League places.
"They are on a bit of a roll at the minute. Although we tried our best and worked hard it wasn't good enough.
"We were looking for a bit of revenge after playing on Wednesday night and getting beat, but it wasn't to be. I think we were probably the better team first half and created a few chances but when you don't take the chances sometimes you get punished for it and that was the case today."