Johnson claimed that the visitors were rattled by the on-field threat in the first Ashes Test, reports Xinhua.
"I think it's worked for us. I definitely think they're rattled by it," Johnson told reporters in Perth.
"Obviously, their coach has come out and wanted a truce from what I've heard. That's not going to change from our end."
The England cricket team is struggling to regroup for the second Test in Adelaide following their 381-run loss to Australia in Brisbane and veteran batsman Jonathan Trott's departure from the Ashes tour due to a stress-related condition.
"It (sledging) was pretty quiet the whole match until sort of closer to the end and we know there's definitely tension there, there always has been," Johnson said.
"So, I thought it was really good what Michael did as a captain, that's what you want your captain to do, to stand up for the players and that's what he did," he said.
England coach Andy Flower said he would consider meeting his Australian counterpart Darren Lehmann in a bid to set some sledging ground rules ahead of the second Test in Adelaide.
But Lehmann said there was no need for him and Flower to meet ahead of the Adelaide Test.