Paul Lambert’s men did level through Christian Benteke midway through the second half before Ben Arfa’s long-range shot was parried into the path of Yoan Gouffran, who duly netted a 73rd-minute winner.
“We carried a lot of offensive threat,” Pardew told BBC Sport.
“We haven’t had enough threat, but we’ve got it now.
“Hatem Ben Arfa got a lot of headlines last time he scored against Fulham but I thought he did just OK then. Today he was unplayable. Hatem was on fire today.
“He has the ability to hold on to the ball and give us a rest, then burst past one or two players. If he can get consistency not only will he be a threat for us, but a threat for France at the World Cup.”
Meanwhile, Aston Villa manager Lambert was critical of his side’s first-half performance, whilst also conceding the Magpies were just too strong at Villa Park.
“We never really got going in the first half,” said Lambert.
“Credit to Newcastle on that side. We got back in the game with Christian’s [Benteke] goal. The second goal was a poor goal to concede.
“You pick yourselves up when you go behind and go again. We gave it a right go but you can’t start the way we did.”
Get enhanced odds of 18/1 on Andy Murray to win Wimbledon or 10/1 on Novak Djokovic when you open a Paddy Power account.