in answer to the question ..a patty melt is so different from a hamburger… A cheeseburger on a bun is without compare.. A cheeseburger on bread is a totally different experience.. especially in The Bite. And a pattymelt is totally different… you make a grilled swiss cheese sandwich on rye, carmelize some onions, fry a burger and put the burger and the carmelized onions inside the grilled cheese. Way way different.
no duh!