Obviously as games it's hard to compare because MK8 is a full release that is absolutely brimming with content and F-Zero 99 is a free game with Nintendo online, but generally speaking which style of online racing do you prefer?
I've always been more of an F-Zero guy and prefer the flow as there is generally a lot less stopping and re-starting like there is every time you get shelled in Mario Kart. The racing is faster and more zen-like in F-Zero to suit my tastes. The increased focus on battle here obviously makes 99 a little more similar to MK8 mayhem but they are still entirely different racing experiences.
I've always been more of an F-Zero guy and prefer the flow as there is generally a lot less stopping and re-starting like there is every time you get shelled in Mario Kart. The racing is faster and more zen-like in F-Zero to suit my tastes. The increased focus on battle here obviously makes 99 a little more similar to MK8 mayhem but they are still entirely different racing experiences.