I haven't played the game myself, but I want to throw my two cents in here. I think the reason for the scores is simple. Many people believe Double Dash was a problem that needed to be fixed, so as things were "fixed" from Double Dash, people were saying how great this was and how this will be the best Kart ever. What everyone failed to understand is Mario Kart Double Dash was the best selling GC game for a reason and had a damn good metacritic average, which means there were quite a few people out there who thought Double Dash wasn't something that needed to be fixed at all. To not even include a double rider Kart support mode into this game was an oversight on Nintendo's part, which if included would have probably pleased more people because then everyone wins.
Tag: Became a freaking mod and a complete douche, coincidentally, at the same time.
