To be honest with you, I think they are both equally yummy. The Burger King sourdough King higher in calorie, but larger in size. It does stick with you longer. The Wendy’s Bacon Pub sandwich does have added feature of fried onion rings and the option to choose the amount of patties you would like on it- 1,2 or 3. I looked it up online and the sandwich was supposed to be on a pretzel bun, however I don’t recall mine being served on a pretzel bun. Unless it was just a very bland, flat pretzel bun, unlike the one advertised. The sourdough bread, on the hand, at Burger King, is really good. So, if you are willing to consume a few more calories, forego the fried onion rings, and want a better bread with your Burger I suggest Burger King’s Sourdough King. If you want the slight kick of BBQ sauce with the added crunch of a few fried onion rings on top of 2 cheesey burgers at a slightly smaller size, then I suggest Wendy’s Bacon Pub Burger. They are both a little on the pricey side though, and definitely not something you should eat every day.