For what ever it is worth the Honda EU3000i Front panel says MAX AC Current is 23.3AMP

The Honda EU2000i front panel says maximum AC Current is 13.3AMPs... Combining two together should give you 26.6AMPs current...

So this says you should get 3AMPS more current using the two EU2000i generators...
It is also easier to man handle the 2KW Honda Generator verses the 3KW Honda Generator due to the weight involved. The 3KW will most likely take two people to lift one up in the back of the truck bed... However the remote start on the 3KW model might sway a few folks...
Decisions Decisions....
Roy Ken