Technically it's not a microwaved cheeseburger, since there's no microwave on the plane. It's a convection oven reheated cheeseburger. Not that that makes it sound any better.
I think the domestic F cheeseburger used to be better, back when it wasn't heated on the plate. There's something about heating those on the plates that makes the bottom bun get too hard, the cheese get too melted (causing it to run off the meat and onto the plate), and the top bun to get soggy.
CO's old catering method was much better. The same food took a quality hit when the reheating and plating methods were changed last fall.