I went to Burger Legend a month ago and got their "Great One" burger with fries on the side.
I know BL praises itself for their fresh patties and all but the burger just tasted meh, I mean it literally didn't taste any different to me than an average burger from Hero Burgers or Five Guys... The bacon was actually the differential factor - it tasted amazing, it was juicy,crisp, and flavorful.
Overall I'd give it a 2.5-3 - would I go outside of my way to go there to grab a burger? Probably not, I mean i'd have indifferent utility to a Whopper from Burger King.