Hi Dude, remember I was telling you not to take any side missions on your 2nd playthrough? Here's the confirmation from the Gearbox Forums themselves:

http://forums.gearboxsoftware.com/showthread.php?t=154087

Read it carefully and you'll get all the juicy loot at level 50! Also, if you don't hit level 50 in your own game after you've finished the main storyline, you can always go back and farm the warrior or the bunker to get your level up. Don't go onto someone else's game to level up. If you need a hand farming anything in your game I'll jump on an' help ya. Cool?