When I first heard of the worlds fastest drummer thing I looked it up on the internet and pretty much thought, this is silly. I wrote them about making a counter that did more then just count. Why not make a machine that measures the touch of the stroke\strike and measures the time between between each stroke\strike? Seemed to me that much of what they're doing is promoting some sloppy playing. If they built an avg. or mean into the competion and disqualified all strokes that don't fall within an acceptable range, then they would be more promoting a fast drummer rather then a fast banger. To me, there's just nothing musical about what they do when it comes to "most" of their competitors.
I wrote that because a paradiddle doesn't sound like a single stroke roll. I recently read in one of the magazines a drummer stating that he was practicing paradiddles trying to get the even sticking and stroking found in a single stroke roll. That's how I read what he said anyway. What's the point of that? When played slow, every note is to have an equal value, but that's not going to happen at speed. You might as well say why play double stroke rolls? Why have any of the rudiments at all except the single stroke roll? Beyond the obvious practice benefits, I've always felt that the rudiments each have their own sense of motion and it's really the rhythm of the motion that you're after. Just my opinion anyway and I'm just saying a bit differently what many have already said.