"I was surprised by the margin of the win, especially against QPR," Jol said.
"They had two away wins so they are good away from home, with [Shaun] Wright-Phillips up front and Adel Taarabt, who is a great talent.
"I saw them live the week before against Aston Villa and they looked solid.
"That said, everything came together for us - support play, up front, midfield, holding them up and stretching them.
"We gave them a lot of problems and that is what we did, for example, against West Brom the week before and Twente in the Europa League but we couldn't score.
"It was good to see that Andy Johnson scored a couple of goals because that is what you need.
"Playing well is important but you need the results as well. We didn't have the defeats - we had four or five draws in a sequence - but it is not enough to climb the table.
"Winning always helps mentally and [boosts] the offence as well."