Heavy Duty Kill A Watt Project Completed - see pix

I would be interested in Mr Wizard's VA results from combining the two converters compared with adding their individual VAs

My theory is that the VA then would be lower than adding the VAs of the converters individually for the same total amps, because the higher amp draw of the actual total would make for a lower input Voltage.

So if the set-up allows for such a test of my theory, that would be useful info for gen VA size vs charging amps possible calculations.