I just don't want full mosey to be offended somehow that I might have indicated through poor wording that I disproved his claim. I didn't disprove it.
I did note that the 100AH AGM did as well as a 135AH Flooded 12v batt in the one case I tested. That might be typical, don't have any more data.
The AGM is not wild and crazy better, but it is better by a useful amount, so you can do more with the smaller bank that is the most you can fit in a smaller RV if you use AGMs for that.
You still need more battery bank for high draws even if they are AGMs. I need an AGM because it must go inside the TC. Now I know what its limits are and how to use it properly.
Full mosey got me headed in the right direction.