I haven't listened to the audio clips from the report yet, but what I've heard in person, mine and the drummer are pretty close to the same sound at idle, above 5k rpm, mine are a litte louder and deeper toned. Standing next to mine, up to 5 feet away, you can feel it shaking stuff. 10 feet away, it's just a good rumble. Didn't hear the CES in person, so I can't comment on it. Jardine/FMF/HMF, etc. are pretty much all the same, loud/sharp sounding to me.
Either way, all the aftermarket pipes are pretty loud.