I speedrun the most stuff and i also get between 10-15 blue an 1-3 legendarys after 4strikes. I don't matters how you play it. It is to random dude. And to kill every enemy takes more time then speedrun. If you stay on the right place it is like the loot cave. And when you go as lv29 in the tiger strikes you are rushing it. Because you can do with the Handcannon 1 hit kills. In my opinion it don't matters. My friend is doing what you say all the time, and he get nearly nothing out of it. Only wasting his time