It deserved to be tbh. Coming off SMK, giving MK64 a 64 is generous imo. It's easily the worst Mario Kart, and one of the worst of its kind. They may as well have just shipped it with Block Fort and called it a day, because racing in that game was ridiculous.
I'm not sure if 64 as a score is GENEROUS per se. MK64 at the time was an amazingly fun game. I'll admit I was ten years old of course.
SMK I never really played more than a little bit. Rented a few times. Never bought. Didn't really catch on. MK64 became more of a staple.
That said, ever since Double Dash I've felt that 64 is...outclassed.
After playing the likes of DD, DS, MK Wii and MK7, the N64 game is just not particularly fun anymore. Skill aside, the controls don't feel great. The tracks aren't anything special and even the longer ones that I used to love (Wario Stadium, Rainbow Road) are just boring. And, obviously, the visuals are iffy. Not for the time but now? Yeesh.
It's so weird to know how many people downright hated the likes of Double Dash and MK Wii. To me, both of these games felt great to play and had great tracks. They're probably my favorite games in the series (console bias) and make me never want to touch 64 again other than for the occasional nostalgia trip. Not even the battle mode in that game is as fun as it was back in the 90's when the experience was fresh. MK64 doesn't hold up, period. It has aged very poorly.
I'm so hyped! At the same time, I'm disappointed at how poorly they've implemented the gamepad. I mean seriously, how could they make the gamepad mirror the TV in local multiplayer rather than give it its own screen??
It's already been addressed in multiple discussions. The consensus is that the game probably fell below Nintendo's standard for performance when the last screen was used in multi.
Believe me, it's a feature pretty much everyone agrees would have been great. Other games have implemented it, too, such as Sonic All Stars Racing, though again with noticeable performance drops that Sega was likely okay with but Nintendo wasn't.