The Bacon Lettuce Burger at McDonald's in Tokyo is built on the small cheeseburger platform (not the Quarter Pounder) making this a fast food sandwich in the class of a Jr. Bacon Cheeseburger from Wendy's or similar.
Inside, you can see the sandwich is as-advertised. A cheese burger with bacon and lettuce. I found the bacon to be on par with something I'd get in the States, not some random sketchy international interpretation of bacon. The burger was juicy and tasty, salty of course, and decently meaty. I had to order some McNuggets as an accompaniment, though, as the burger by itself was not enough for a meal.