Why is this a comparison
Mario 64 revolutionized 3-D platformers and created the “collect-a-thon” blueprint. Outside of the camera at certain moments, the game still holds up well today. There’s also nothing that comes close to Mario’s acrobatics in 64 except Mario Sunshine
Sonic Adventure was just an ok sonic game with a couple fun loop de loops and crash bandicoot chase sections. Everything else apart from graphics was mediocre to bad