Westwood's seven-shot victory was especially notable, given that it hoists him back into second place in the world rankings, above Rory McIlroy. England now have five players in the top 20; there have been 26 tour victories for British players over the past 12 months.
"I've amazed myself really," Westwood said. "It's been staggering, it all came together well. It's probably the best I've ever played. I'm in a tricky position because I've been so successful but not won a major.
"Any time I've gone a year without a major, people are always going to say it's been a disappointing year for Lee Westwood. If I was to evaluate the way I'm playing now and a year ago, I'm a better player.
"I'm going to continue to work on my fitness and all aspects of my game. I'm going in the right direction, I can see a lot of improvement and I'm happy with the way I've finished the year. I've won two out of my last three events. I'll go into the winter with a lot of confidence and I'll try to come out next year playing the same kind of golf as I played this week, a little bit leaner and well rested."
Westwood's world ranking move is newsworthy in light of McIlroy's recent split from Chubby Chandler's International Sports Management group, which looks after Westwood. There has been speculation since about the nature of the relationship between the two players.
Westwood finished clear of the Masters champion, Charl Schwartzel, with a total of 22 under par. The Worksop golfer had a final round of 69, having shot a career best 60 on Thursday and 64 in round two to set him on course for a second victory this month.
"It was special this week because ofthe difficulty of the course," Westwood said. "I've never had an 11-shot lead before and it was difficult to come out and refocus and reset goals. At 20 under after two rounds it's yours to lose really with an 11-shot lead. There was pressure involved."
Poulter was equally delighted after his win in Australia. The 35-year-old has been generally short of his best this season but impressively overhauled Geoff Ogilvy to finish the year on a high. Poulter had brushed aside a bout of food poisoning on Friday and some negative press in Australia – relating to his image and fancy for fashion – to lift the trophy.
"To come down here the week before Christmas and to win this tournament is very special," Poulter said. "I love being in contention, that's why I play this game. If you're down the field, there's no adrenaline, there's no excitement, there's no real interest. So that's why I practise hard to put myself in this position to enjoy the fact of being under pressure because you find out who you are."
On his final 18 holes, after which he signed for 67, Poulter said: "For me it was a pure ball-striking round of golf. It was flawless the whole day. I was very happy with how I approached every shot. I hit my targets. I was methodical."
The gold jacket collected by Poulter, alongside a cheque for Aus$180,000 (£116,000), will form part of his famously exuberant wardrobe. He put more significance, however, in the basic merit of seeing out a three-shot victory.
"To win this is the second highlight in what has been a tough year for me," Poulter said. "I needed to play well this week. It will move me 10 or 12 spots up the world rankings. Any win, whether it's in Asia, in Europe, in America, moves you forward. That's how you work out how well you're playing; take a look at the world rankings, they don't lie. To do this in a Ryder Cup year and move inside the top 20 on the world rankings means a heck of a lot."
Poulter will finish 2011 ranked 16th in the world. Paul Casey lies 20th, Graeme McDowell 13th and Tiger Woods 23rd.
Luke Donald has enjoyed enough prominence this year not to be overly perturbed by his 12th-placed Melbourne finish. The leading money winner in both Europe and the United States took time out to praise Poulter.
"If you ask Ian, he won't say it was his greatest year," Donald said. "But he is a very strong-willed player."
Ogilvy was philosophical. "Ian played very well and I didn't," said the Australian, who conceded the two-shot lead he held after round three. "I couldn't make a birdie all day. I am disappointed but what are you going to do?"
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