I actually think there are a lot of studies out there to suggest clean eating gets better results, someone just needs to dig them up.
There are exceptions to the rules (people with great metabolisms and perfectly dialed in macros for their body type). But the majority of people will benefit from clean eating. And saying everyone with great results are on drugs is just a cheap cop out.
Like I said in a previous post, as Bazza says, carbs are just carbs. So try eating sugar as your carb source for a while and see what happens. Good luck getting any fiber and I look forward to your insulin spiking with massive blood sugar crashes.