I'm really famous, and I'm a monster musician, and I use cooledit exclusively.
Okay, only one of the 3 things I just said is true, but regardless, I'd venture to bet that 90% of the edits you hear on the radio are done in cooledit. It's a staple of every radio station I've ever worked with, and there actually have been several.
The reason you hear more about ProTools, in my opinion, is that they aggressively marketed mid-level studios that got scared to death when the digital revolution started. So most "real" studios are ProTools friendly, so most "real" musicians that record outside of the studio use it as well.
Metallica's last album was recorded on ProTools, and it sounds like absolute dogshit, so I put more stock in the process than I do in the processing, pardon the pun.