To me many "facts" or studies aren't reliable, because they were commissioned with an end result in mind... which from the gov't or spirits lobby was intent on discrediting MJ. Again, my personal experience, which I've witnessed hundreds (thousands?) of times tells me that anyone after a night of drinking is not 0% impaired (nor do I believe they'd have 0% alcohol after say 8-10 hrs if they were reasonably buzzed.. that screams paid for with alcohol money) , and just as I've often said, I'll drive next to someone with a pot buzz 10/10X rather than someone who is equally buzzed/drunk on alcohol; I'll take the same the next morning.
You apparently have a bad reaction to pot... so did my ex and she'd never touch MJ and probably shouldn't, but that's not representative of "most folks" that I've personally witnessed hundreds of times. That's the great thing about MJ being legal, because it does allow you to "control" it as you describe your experience with alcohol. You select the type of weed to know what it will do and the dosage level to control how buzzed you want to be. For instance, if I'm doing stuff I take half a 10mg gummy and if I'm chilling at home I take a whole one. And, my experience (and that of most others I've been around that would count to dozens of people and hundreds of instances) is the opposite of yours where seeking a "controlled buzz" is concerned. Whereas I'm perfectly happy with the MJ buzz described above, with alcohol, even though I may plan to keep in control and only have 2-3 drinks, once I have that many, I want another... and another. I know you might say my anecdote cancels yours, but as I said, I know dozens of people and better than 95% have far less struggles with pot. Curious what your experience has been with drinking; how frequently do you drink? Have you ever tried "controlling" a MJ buzz like you have alcohol? Not going to encourage you to try as it sounds like you have struggled with pot, but highly unusual in my experiences.