Hoops manager Mark Hughes is yet to field the same rearguard in successive games, with injuries taking their toll on the west London outfit’s performances.
QPR have already conceded 16 goals in seven games, while in contrast, Everton have the fourth best record in the Premier League – and Bowen has been impressed by the Toffees.
“It’s been a difficult time with injuries, particularly to the defence,” said Bowen.
“It has had an impact on us. At the moment we’re spinning plates and trying to get everyone back to the same level of fitness, which has been difficult.
“Look at Everton. I would suggest they’ve got six players who are used to make up their back four.
“They’ve got Tony Hibbert, Phil Jagielka, Johnny Heitinga and Leighton Baines. If Hibbert’s out, Seamus Coleman comes in, and they’ve got Sylvain Distin if one of the centre-backs get injured.
“And they’ve been playing together as a group for a couple of years. They know each other’s strengths and weaknesses, which is massive.
“We’ve had a stuttering start to the season but we know we can come through it.”