It's amazing how well this stands up today, actually, and like you say, shows just how well made it was in the first place. I was never a fan of Sonic because I felt it just didn't have the same level of expertise in how it was put together. I know it's like comparing carrots and potatoes, in a way, but there was just something so 'neat' about how SMB was crafted, and it stands the test of time.