I loved SPM. It somehow managed to feel like Paper Mario despite the genre shift.
Sticker Star on the other hand, sucked everything Paper-Marioy out of the thing. Removing things like the Koopa shades, partners badges etc. Ridding itself of all the unique content of the originals and replacing it with ya bog-standard NSMB style stuff
I'm more on the iffy side on Paper Mario It has some good parts but It also has it's bad levels I haven't even finished the game yet stopped in the desert/cavemen level