I don't know really that's a good question. maybe cause anthros appeal আরো to little children আরো than robots. অথবা it could just be আরো people are introduced to Sonic. I know in my personal experience I grew up playing sonic as soon as i was old enough to hold a controller, and i didn't hear about Megaman till i was in 7th grade. but I do agree with আপনি Megaman is the way better franchise.