F1 is sort of country-wide where every Finn can support Kimi no matter which team he's driving for since people mainly support the drivers, not the teams, whereas Teemu has certain hockey teams related to him that people might dislike (Jokerit, Anaheim) on a personal level. Hard to say who's more popular of the two, but I think it's safe to say that they're in a class of their own.
Also funny how these two happen to be the exact polar opposites of each other when it comes to reputation in their respective sports.