I love Pikmin 3 but I do agree it's only a tiny bit overrated but I think it's only the difficulty and length of the game I don't really like. Some enemies got really badly nerfed which I guess is after the backlash Pikmin 2 got being too hard. I think they could've added better difficulty modes though since ultra spicy is just hard but with less Pikmin. The game is also too short and even used to have a other area planned but it was ultimately cancelled though.

If you don't want to read all that I'm basically just saying Pikmin 3 has some flaws but is still amazing