O'Sullivan and his back room team can give themselves a well deserved slap on the back because they out-thought the opposing think-tank in every department.
The areas they targetted were the English lineout, the full-back, the need to close down the space in the centre where Clive Woodward had placed his most potent threat, Jason Robinson, and - and this would have really riled Woodward (had he known) - the vulnerability of the English out wide.
From the very first throw after just 53 seconds when Paul O'Connell snaffled the first of Steve Thompson's darts' Ireland went after the English in the area where for four and a half years they have been supreme. And that proved a fruitful area for O'Connell, Malcolm O'Kelly and Simon Easterby.
Thompson threw over-long (once to John Hayes) and threw crooked and Woodward left him there until the 60th minute by which stage the confidence of the catchers must have been severely dented.
This allowed Robinson move to full-back but at this stage the Irish had a steely resolve about them and crucially Thompson was still around throwing wild and wide.
But the really lovely aspect of this victory was the manner in which the coup de grace was delivered. You see, we were led to believe that the English back three were the superior unit by a distance and the English thinking wouldn't even have contemplated this all-singing all-dancing troupe being out-flanked by the flat-foots in green.
But that's exactly what happened in the 51st minute.
It began with a sublime break from D'Arcy which was carried on to the right hand side and when the ball was recycled two skip passes (O'Driscoll and D'Arcy) found Tyrone Howe galloping forward. He took an awkward enough pass and did what Balshaw wasn't able to do - deliver a perfectly timed pass for Girvan Dempsey to score. - Happy Days.