Min of 3,000-5,000 watts to run both.
Here is a link to a
Champion 3,400 Watt generator (with electric start) that would do what you're looking for, but it is only a 30amp device. (so only one "leg" would be hot on your distribution panel)...meaning you can only run one AC unit.
I am guessing you want a 50 amp generator, so you can simply plug in your factory cord....right? In order to do that, you will need 2x portable generators and then use a special cable (from Champion) that combines them together and provides a 50 amp outlet.
Suitcase size (like Honda EU2200) will not run 2 15k AC units.