I don't have a scientific answer at all. I know that for me, benzos are relaxing and the effects are consistent. Like, if I take 1mg of the same benzo every day, I know what to expect.
I'm sure we've all seen people go nuts when they get drunk...sometimes even violently nuts.
I've never once seen people getting into a brawl bc they've taken too many benzos, ya know?
The alcohol hangover is nightmarish as well.
In addition to the above, the 2 substances produce entirely different feelings for me.
If I have too much alcohol, I have a tendency to become loud and overly social. I feel like I could do anything, and all of my fears disappear... obviously, this is not a good thing although it may feel good at the time lol. There have also been times I have gotten very emotional, Even to the point of tears while drinking.
On the flip side, I can depend on benzos to be consistent in their effects. Depending on the dose of alprazolam (which is what I take) I'll always feel anything from slight to moderate relaxation.
I guess part of the point I'm trying to make is that I believe (in general) that benzos will consistently produce relaxing effects. I mean, unless someone has a strange allergic reaction to a benzodiadepine they are not going to get wild and crazy and wound up.
Of course, alcohol can be relaxing as well but it doesn't feel anything like benzos, and results can vary greatly- and not just from 1 person to the next, but 1 person may have several different reactions on seperate occasions with alcohol.