Looks great, but I'd change "on your Super NES" to "on your Super Famicom", but then maybe do an alternate SNES version as well.
Maybe also highlight the differences between SGB and SGB2, like you did with the link cable part, but maybe make it more like, "SGB2 adds the ability to.." or something like that. I think the border selections are different than SGB1 as well.