I've been running Rotella Synthetic 5w-40 for quite a few years now, both in a hot-rod oil boiler and my K7 1000. As has been mentioned using quite a few misspelled words, Rotella is not a "pure" synthetic. The highly purified base stocks used to make these types of oils have erased the traditional advantages of pure synthetics, namely far superior high and low temperature performance as measured by pour point and flash point.
Additionally, the additive packages in these "diesel" oils are very robust. Viscosity modifiers, detergents, anti-foaming agents, etc., are some of the best in the industry, plus they have no friction modifiers like molybdenum disulfide which is the ingredient that disagrees with wet clutches. So you get an oil that retains it's additives very well, which makes sense when viewed from the perspective of a trucking company owner who wants the best longevity of his engines coupled with minimizing the expense of oil changes. The other benefit of this association with a much larger industry is lower cost via mass production. The smaller boutique oils like Motul or Elf have no ability to spread costs over large production runs.
Speaking of those other products, the simple fact is: we don't know what oil any MotoGP team runs. What's on the bike is a sticker. What's in the bike is a closely guarded secret that wouldn't translate into a street bike anyway, unless you're keen to run what is likely 0w-0 in your street bike.
And rpm has no bearing on the subject at all, assuming adequate flow. The shearing of oil between cam lobes and buckets or between cylinder walls and rings is a function of valve spring pressure and of combustion pressure forcing the rings outward against the cylinder walls, not rpm. It's becoming more and more understood that the vast majority of engine wear occurs at startup, which makes sense since the very physics of lubrication prevents the metals in an operating engine from ever actually touching each other.
Or you can spend $16/quart on whatever you want and ride down the road swerving around all the imaginary broken down bikes whose owner's were foolish enough to run "diesel" oil. Cuz.... you know.... that happens.
Why, yes ma'am, I do fly jets.