yeah ive read how they separated the tier, i just think they coulda put Fox as top S out of common sense, because it's obvious the votes for 2-4 would be split, while #1 is universally accepted
you have a point in the fact that lookin at top/high/etc is the way to go
ICs/Falcon is an interesting subject, and as shown by the fact that Falcon is over the ICs in the community and community panel shows that both sides have solid arguments
regarding your argument, aka that Falcon has accomplished less than ICs, i feel like that with that logic, Luigi/Yohsi should be over Doc (Shroomed dropped Doc in 2015, so Yoshi's and Luigi's results are more recent than Doc and thus should be higher in the tier list)
one of the main ICs arguments that ive seen in other places (and in your post) is that it has better results, and i think this kinda stems from the fact that most people know how to deal with Falcon much more than how to deal with ICs. if you look past results, i'd say Falcon has more potential and is thus a better character than ICs (altho on the other hand, wobbling is such a powerful tool that ICs is arguably an inherently better character than Falcon)