That's kind of my point though. For me Pikmin resembles Wonderful 101 more than it does a strategy game. So if we're saying that 101 is an action/adventure game then surely Pikmin would be also.
Pikmin only resembles W101 in that there are multiple characters on screen at once that you control. From what we've seen, what you're doing in W101 is nothing like pikmin.
In pikmin, you have specific types of pikmin that can do specific jobs, you can divide them up to complete different tasks, you can take resources back to a base, etc. It's not high strategy, but the tasks one would do in a strategy game are present in pikmin.
In W101, aside from the main characters, doesn't look like it has unique units, just a mass of characters. And no matter who or what you have you can transform into a gun, or sword, fists, or whatever. Then you just attack, while every once in a while solving rudimentary puzzles through a linear course. It looks more like a beat 'em up, just with a facelift. You walk down the street, fight this guy or that guy, then get to a boss.
Yeah, if you took a picture of pikmin and compared it to a picture of W101, they would look the same, but if you took a picture of Metroid Prime and compared it to Halo they'd look the same too. And we know they aren't. The type of enjoyment one would get out of both games seems to be completely different. So I wouldn't say they fall into the same genre at all.
I'd say pikmin is adventure/strategy (once again, you can debate how much strategy is there, but it's there), whereas W101 (from what we've seen of it) is just a brawler.