The former Liverpool man says Chelsea's battling display in the 1-0 win is a mark of champions.
Jose Mourinho’s side were not at the races at Loftus Road but still came away clutching all three points courtesy of a late strike from midfielder Cesc Fabregas.
The result left them seven points clear at the top of the Premier League table with a game in hand, meaning their first title in five years is getting closer for the side.
Now, Souness has praised the battling display from the leaders, saying it was their winning mentality that saw them to victory.
"I thought it [the goal] would come from a set piece because the pitch didn't allow for their quick, accurate passing when they got in the last third," he said.
“They've got that mental attitude where they think 'we will not lose today and somewhere down the line we will get a breakthrough and win 1-0', like they did."
The former Liverpool man also says that winning this type of game is the mark of real Premier League champions.
The Blues struggled against a resolute QPR side, themselves battling hard against relegation at the other end of the table, and could not play their usual attractive football on an unwelcoming pitch.
Not being at your best but still getting the three points is the mark of champions though, not the impressive 3-0 or 4-0 wins that they are accustomed to, as far as Souness is concerned.
“That is the mark of champions, when you can win games without being anywhere near your best,” he added.
"I think for Chelsea, you would normally say that's the performance of champions when they go out and beat someone 3 or 4-0 and been fabulous from start to finish. But that was the display of champions again today, in the manner that they won the game, they just dogged it out.”