"It was a difficult pitch for either side to play on," added Coppell.
"All told I would say we edged it, but not by much. There was a terrific work-rate from both teams and it was a shame there wasn't goals in it somewhere."
Coppell believes QPR, among others, could yet have a say at the top.
"There are teams who are really putting on a surge," he said.
"QPR, the two Welsh teams, Burnley are there or thereabouts and Sheffield United as well. There is a little group who, if they maintain their surge will be definitely be a factor in things."
Rangers are now unbeaten in their last eight Championship games and remain within striking distance of the play-offs.
"I'm never happy with one point, I always want three, but I'm happy with the performance of my team," said boss Paulo Sousa.
"It's not easy to play against a very compact, intelligent and clinical team.
"We needed to be strong and competitive and I felt we were. We controlled the rhythms of the game."