Nicki's main problem is quality control. She's probably one of the artists that would benefit most from having to cut songs from her albums and get it down to a solid 11 or 12 (with up to 15-16 on the deluxe), yet she always has 20-30 songs on her albums and the result is a mediocre record all 'round with way too much filler than there should be.
I think I prefer The Pinkprint to Roman Reloaded because while RR's standouts reach higher highs, The Pinkprint has less trash filler overall.