How are Sonic and Sega All Stars Racing and Mario Kart the same and different

Well Sega racing obviously has Sega characters in it but in Mario kart it's only people from Mario games. That's the obvious. A way that they are the same is that you can pick up power ups to hit your opponent which is fun but Mario kart had that first. There's not a lot of differences besides different characters and different tracks that originate from Mario or Sega games.