Actually I think the Iraqi resistance had a primary goal of not allowing their oil to be siphoned off by the Americans and British - so they might view this as success rather than "failing to rise to the occasion".

As for the rest of the post, I couldn't disagree more with it - Iraqi oil reserves are huge - we didn't invade for the figs, as one American general once noted.

See here for why I believe Iraqi oil reserves are over 300 billion barrels...

http://peakenergy.blogspot.com/2008/11/iraqs-oil-greatest-prize-of-all.html
http://anz.theoildrum.com/node/4675

While it is obvious that more serious exploration would be needed to settle the issue to any degree, here are a couple of papers estimating quite a lot less oil yet to be "proved" in Iraq:

http://www.searchanddiscovery.net/documents/gong03/index.htm

One by Jean Laherrere:
(PDF alert)

http://www.oilcrisis.com/iq/iraqLaherrere.pdf