Good new wrestling theme songs are very few and far between these days. The days when a wrestler's theme was meaningful, or at least distinctive of his character, are long gone.
The best times were the early days, really, in the late 80s and early 90s, with guys like Hogan, Warrior, the Million Dollar Man, the Undertaker, Bret Hart, Sgt. Slaughter, Shawn Michaels, the Legion of Doom - hell, even the damn Bushwackers or Rick "the Model" Martel - I could go on and on, but these guys all had very distinctive music specifically tailored to reflect their personas. Even the bad examples of music, like, say, the Natural Disasters theme, did at least not sound like some generic crap someone randomly picked out of a music library. Those were the golden days of wrestling theme music.
So if nothing else, I don't think their bad theme music will hurt Cesaro, Rollins or Ambrose, for the simple reason that most everyone's music is boring and indistinguishable these days anyhow. I'm thinking of guys like Cody Rhodes, Dolph Ziggler, Wade Barrett (!), Sheamus, Christian and so on and so forth. You get no feeling that the music is in any way connected with those guys. It just happens to be the generic rock they got tagged with.
There are exceptions, of course. My ears may bleed by now every time I hear the damn John Cena theme, but at least it's very unique. Daniel Bryan's theme comes to mind. CM Punk's themes (both of them), Triple H, among others, but they are getting rare.