The thing with disposable blades versus straights is that straights use much better steel, a thicker and more stable base of the blade and a hand sharpened and highly polished edge (to make up for its lack of industrially micro-level sharpness). While the disposable is sharper, it has the potential to cause more irritation. It's one of those counterintuitive things. I do also think that most straight shavers become hardened to a bit of razor burn, to an extent.
I think that there are 2 components that go into making an edge that shaves well. One is obviously sharpness and the other is smoothness. That goes for DE/SE and straight razor blades. You can have a super sharp blade that gives a harsh shave or one that is slightly less sharp and gives a smooth shave. I like the latter combination. You only need so much sharpness to shave but you need a smooth blade for comfort.
Considering everyone has a different skin of varying sensitivity you find people looking for a DE/SE blade that works for them. If you hone your own straight razors you have to come up with a method that produces the right combination of sharpness and smoothness for your face. That method may vary depending on the blade you are honing because steel composition and/or hardening varies.
If your shaving technique and lather are good then any of those types of blades will give you a smooth comfortable shave and about the same amount of irritation if any.
Been wet shaving on and off for 50 odd years so a little razor burn means little to me. OTH a face on fire is another animal altogether and happens very rarely.
Bob