About: http://webisa.webdatacommons.org/372217030

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Not sure about the discrepancies, however, 2.1 is the latest version and it should be the one tested.Also, iOS 5 brought significantly faster openGL drivers, maybe PCWorld were comparing result from a while ago on the ipad2 and iOS4.
http://www.w3.org/ns/prov#wasQuotedFrom	anandtech.com