From your own link Monte.....and the difference is, what took place and created a major difference from just the formation of ISI. The new authority that came about due to BO and his team failing to negotiate for a SOFA agreement. Which would have prevented ISIL from doing what they did. Attempting to bring Bush Jr into something that clearly falls on BO.....isn't working. Nor will it!
The group is known in Arabic as ad-Dawlah al-Islāmiyah fīl-ʿIrāq wash-Shām, leading to the acronym Da'ish, Da'eesh, or DAESH (داعش, Arabic pronunciation: [ˈdaːʕiʃ]), the Arabic equivalent of "ISIL"[33]) On 29 June 2014, the group proclaimed itself to be a worldwide caliphate, with Abu Bakr al-Baghdadi being named its caliph,[37] and renamed itself "Islamic State" (الدولة الإسلامية, ad-Dawlah al-Islāmiyah). The new name and the idea of a caliphate has been widely criticised and condemned, with the UN, various governments, and mainstream Muslim groups all refusing to acknowledge it.[38] As caliphate, it claims religious, political and military authority over all Muslims worldwide and that "the legality of all emirates, groups, states, and organisations, becomes null by the expansion of the khilāfah's [caliphate's] authority and arrival of its troops to their areas".[39][40] Many Islamic and non-Islamic communities judge the group unrepresentative of Islam.....snip~