Loic Remy's stunning 85th-minute strike appeared to have earned Rangers - who had Bobby Zamora sent off after 20 minutes - a crucial three points in their bid to avoid Premier League relegation.
But Wigan, in the drop zone themselves, salvaged a point when Maloney curled home a 20-yard free-kick in the fourth minute of added-on time following a careless challenge by Stephane M'bia.
Latics boss Roberto Martinez rued his side's inability to take advantage of Zamora's recklessness and said that overall his side was "very poor" - an assessment Coleman understands.
"Roberto is disappointed because once QPR went down to 10-men you'd expect them to impose themselves a bit more because they are a very good passing team and they didn't," Coleman told Sky Sports.
"But you've got to give credit to Queens Park Rangers, who we've been critical of this season for a lack of commitment and a lack of desire.
"They had all that today. They were at the races for 90 minutes, especially after they went down to 10 men. After the super strike from Remy you think they are going to win it.
"But it was a ridiculous challenge from M'bia, who did great for the QPR goal. He got up the pitch on the counter-attack and found a great pass to Remy.
"But he comes up with a silly challenge at the end and it's a fantastic finish from Maloney. But I think overall Queens Park Rangers showed more than enough desire and commitment to take the three points."
Fellow Super Sunday guest, Crystal Palace striker Kevin Phillips, pointed the finger of blame for QPR's failure to pick up all three points firmly in M'bia's direction.
"They needed a win today and were desperately unlucky," he said. "There were times when you wouldn't have known that QPR only had 10 players out there.
"They were excellent in the second half, as they were against Fulham on Monday; Chris Samba and Clint Hill defended exceptionally well. It is just so unprofessional of M'bia to foul Maloney when he did. He had no need to make the challenge."
But Phillips, who won the European Golden Boot with Sunderland in 1999-2000, had nothing but admiration for the quality of Remy's strike.
"After I said I thought I saw the goal of the season yesterday from Matthew Lowton at Villa, I think we've seen the goal of the season today," he said. "Remy had no right to shoot from that area.
"It all stemmed from an opportunity for Wigan. It was a great counter-attack from M'bia and good overlapping from Remy.
"He's got no right to shoot from where he does. The power and movement he puts on the ball with his side-foot leaves the goalkeeper rooted. It was unbelievable. It was a wonderful strike.
"You'd probably have to say that QPR pretty much deserved that on the second-half showing."
Phillips was confounded by Zamora's afternoon's work for very different reasons.
The England forward was sent off after 20 minutes when he stretched for the ball but instead connected with the head of Jordi Gomez, leaving the Spanish midfielder needing treatment.
Referee Phil Dowd sent Zamora off after consulting his assistant, Scott Ledger, and Phillips said that was the only possible outcome.
"I'd have to say that Phil Dowd was left with no option but to send Bobby off," said Phillips. "I'm not sure what Bobby was thinking but there was no danger. He was nowhere near the ball.
"It's unlike him. I've played against him many times over the years and it's not in his make-up. But he is so late, it's unbelievable.
"Phil Dowd has tried to let play go on and the linesman hasn't flagged but Phil's been called over and I think you can see the assistant say 'it's a red'.
"When you see it from the angles that we have, it is dangerous play. Bobby could have injured him seriously and from then QPR's backs are against the wall, which is exactly what they didn't need."
Coleman echoed those sentiments, adding: "I totally agree with Kevin. Phil Dowd doesn't want to send any player off but when it is that blatant he has no option. Bobby is not a dirty player but he got it wrong."