yup, you hit on possibly the biggest drawback to wet cell GC batteries. they are NOT a good choice for high current draw. And you hit on possibly the biggest advantage of an AGM battery.
Boils down to carefully analyzing YOUR 12V use conditions and picking the best battery choice for YOUR applications.
Seems like you've done a great job and a great solution.
And thanks for the direct comparison. Good validation of the differences.
In our case I have room for 4 GC, perfect solution for 90 percent of our use on long dry camping times, and adequate for the occasional running of the panasonic true inverter microwave at 1000VA for occasional 5 minute or less times when heating veggies, warming coffee, etc. But it really takes 4GC to run even 1000VA off the inverter for SOC below about 85-90 percent. Two just won't cut it, way to much voltage drop.
