I think that the primary benefit of drilling rotors decades ago was in reducing unsprung weight. There was a secondary issue related to pads outgassing, but we don't use those pad compositions any more, so that is moot.

You may want to look into SAE technical paper 2006-01-0691 "The Effect of Rotor Cross Drilling on Brake Performance". Some good info. While there was a benefit in cooling, the same test results showed the rotors can run hotter (due to less thermal mass), no impact of outgassing, no difference in wet weather performance, 25-30% more pad wear, and up to a 50% reduction in thermal fatigue life.

For the rotors you show, the anti-rust coating can be good (but it will quickly wear off the friction surface). I would be most interested in the thermal performance, and the vane design. OE rotors weren't designed to be drilled, so it is intriguing that they mention OE specs. Maybe they aren't using the OE vane design.

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