I believe a person’s PC is pretty much defined by the apps they utilise beyond the ones that come on it. Two years after the iPad’s debut it’s in that same position. A 16GB WiFI iPad with standard apps is as much “PC” as many people need. A “power user” gets more storage, possibly adds cellular and the Camera Connection Kit, and goes beyond the default apps to add software such as Writing Kit, GarageBand, iWork, Dropbox, Photogene, iThoughtsHD, etc. to meet their personal needs and interests.