Played through 1 & 2 several times, defeated my fare share of Raid bosses. Still voted Destiny. While the bosses and beasts in BL may seem absolutely unfathomably strong, consider what you're working with. The weapons in BL, how they work, and what the Boss tech and Health are based off of are vastly inferior to Destiny's total scifi take on technology, space magic, and general scale in regards to the depth of the lore behind the means. Atheon for example is the/is a conductor of an absolutely immense trans-dimensional network that spans beyond the Sol System and some would argue beyond our Galaxy. Unlike Hyperius who is guarded by four over-specd Loaders with shield generators. The weapons from the BL universe put on full display the downward slope Humanity has observed, manufactured parts from inferior components with crude tech from the 21st century with the rare add-on like the Hornet or Ele-tech. Where as the Destiny universe takes a very strong stance in regards to quality vs quantity. Weapons featuring scifi concepts like barrels suspended in null Grav all laced with programmable matter and more make for a very strong point, and that's just the Uncommon gear. Based on the lore of the systems and general result and means of the respective games' I've gotta go with the world that simply has more going for it.