I hesitate to say this game is better than 4, but it does get so much right in terms of reinventing the formula that I can call it the second best game in the series, a very high 7/10.
probably a contender for second best behind 4 but In terms of content its the same "3 races then a tournament" format set by the 4th game so it loses some points. Still, the minigames are super fun and the writing is okay!