The former Westlife band member admitted that Simon Cowell's latest boyband are more radio-friendly.
"One Direction songs are proper radio records, but Westlife were about selling albums," McFadden told the Daily Star.
The singer also revealed that he would love the opportunity to feature on the next series of The X Factor and help the next generation of popstars.
"If Simon Cowell rang me tomorrow I'd be in the car and straight down there," he added.
Meanwhile, McFadden recently announced that The Irish Connection will serve as his new solo studio album, which will be released on March 11.
Watch the music video for Westlife's 'Flying Without Wings' below: