Pardew hailed Ameobi after seeing the striker come off the bench to fire his side to a much-needed victory.
The 31-year struck nine minutes from time to claim just the Magpies' second Barclays Premier League win in eight attempts with the game seemingly heading for stalemate.
Pardew said: "I know the crowd weren't particularly pleased when I took Cisse, a goalscorer, off but I just felt Shola, he's a big man and this was a big occasion and he likes big occasions.
"It said QPR on the programme but really it was bigger than that, I think we all knew that and he has that calm head - he knows what is demanded here - to produce a quality goal, and it won us the game.
"I wanted to get Shola on the pitch, and thank goodness I did because it was a really class finish.
"He could have taken the shot with his right foot, which is his stronger foot, but to have that composure in that area is first-class."