There's also plenty of difference between how Macross handles its mecha and how Full Metal Panic handles its mecha, and yet we're supposed to use the same term for both
It's also completely retarded to use these terms as "genre descriptors," I have no understanding of how something like Giant Robo could possibly be in the same genre as something like Star Driver; they have precisely zero things in common aside from both featuring robots, but according to you, they should be. These are far from the only examples I could give.
Using these terms would perhaps make sense if we were still living in, say, 1980. You'd have a few weird outliers then like Casshan, Tetsujin and the upcoming Bryger and Dunbine, but most things would fall into your binary. However, we're now at the point where the terms are so completely inapplicable to most shows that they're outdated as hell and yet you still have people trying to throw them around as if they're descriptive of anything meaningful.
I think this is part of what actually turns some people off from mecha, especially the TTGL crowd who expect massive scale out of everything when they hear "super robot" and only really get it in Getter. And then on the other hand you get muh hardcore realismfags who expect everything called super robot to be a toy commercial Brave. Not that people like these are particularly willing to engage otherwise, mind you, but I did say the word misleading in my first post for a reason.
For the record, if you actually watched Mazinger Z, it's ironically much more detailed about logistics than Macross ever is