Basic question on max MPPT capacity to batteries

Not sure going 24v has any advantage with inverters after that last thread about how the batteries at 24v have such a high R. You get little relative R advantage just from using thinner wire-- in fact, you might lose on the deal. Plus you then still need 12v to run the rig.

That is inverter-battery, not solar panel-controller, where I think we have that thinner wire advantage established as fact.