Even with the added numbers, a Loftus Road punter in blue or white has more chance of scooping the Lottery, according to the £4 million midfielder.
“That night, it was our best overall performance over 90 minutes this season,” Cairney said. “In this league anyone can beat anyone.
“Whether we can go do it again in that way, I don’t know. It might be hard to do is as easy as it felt that night. The energy was there, and it felt like we had an extra man on the pitch.”
In contrast, Rangers were two men light in terms of injury when 3-0 down as Charlie Austin and Jamie Mackie limped off within seconds of each other.
Here's a quick reminder of the game.
There were Rs fans working out a goal had been scored every 10 minutes until then, and some thinking a nightmare double figure thrashing a distinct possibility.
As it turned out, Whites throttled back to score just once more, but Cairney insists the slate has been wiped clean.
“It was one of those great nights, but they won’t be thinking about that performance. It’s just different games.
“That said, we can go there and win.”
The pre-match boot is somewhat on the other foot, with Rs 13th and Fulham a perilous four points off a relegation place.
“I wouldn’t say we are going to get relegated, but we’ve got to get a few good results so we can look up and not look down,” Cairney added.
“I believe we’re going to climb but I wouldn’t have thought we’d be where we are.”