Jobs did a lot of useful things, but he was not an inventor and so has nothing to show. He was really good at forcing people to perfect the inventions of others which is a useful thing. Cray-1 is an invention, and better known than the inventor. So it is the right decision for both.
You can of course debate which is better and there are hundreds of other choices that could be put on either coin - both humans and inventions. I would probably pick different things (not people) for both - but this is a reflection of my biases and not some universal truth.
