Brosque, who played a major role in the team that won the 2010 championship, is relishing a week off after the Sky Blues snared second place in the premiership with a 2-1 win over Wellington Phoenix at the weekend.
Brosque said it was hard to tell if Graham Arnold's current team is as strong as the team that won the double under Vitezslav Lavicka.
"There are a few differences between the championship-winning side of 2009-2010 and the current squad," Brosque said.
"I think the league in general has evolved a lot since then and the game is played at a much quicker pace which means, while the squad of 09-10 was a more experienced and patient side when in possession of the ball, the current squad has a lot more pace and is more direct in possession.
"The team of 09-10 was a side that was excellent at defending a lead: if we scored first we won.
"But it was also a side that found it hard to come back and win a game in which we conceded first.
"The current squad is very different and this is shown in the amount of goals we have scored and conceded.
"We have been behind several times this year but we have been confident enough to still end up winning those games. This is very important."
Brosque said the Sky Blues are a big chance for the championship after overcoming a mid-season slump caused no doubt by serious injuries to Nick Carle, Corey Gameiro, Sasa Ognenovski and Ali Abbas.
"I think the fact that we had four season-ending injuries to key, senior players is a huge reason as to why we had a poor patch mid-season," he said.
"Taking four important players out of any squad would have an impact and unfortunately we seemed to lose them all around the same time.
"The Asian Cup break came at the perfect time for us. It came on the back of eight winless games and four in a row without scoring.
"The break allowed us to bring in some new faces and also get us refreshed mentally and physically for the second half of the season.
"Our first game back from the break was a big win away to the Mariners and really kickstarted our season."
Brosque said Sydney's spectacular transformation after the January break put it in good stead for a serious bid for a third championship.
"In 2015 and leading into the finals we have the best form out of anyone in the league with 10 wins, two draws and two losses," he said.
"Every team going into the finals will be tough to beat on their day but I believe with the form we have shown in the past few months, we really don't fear anyone."
Brosque has mixed feelings about the benefits or otherwise of a week's break but prefers to be positive.
The Sky Blues have momentum but also a few players carrying knocks.
"Whether having the week off is good or bad is an answer I can really only give in hindsight once our semi-final is over," he said.
"There are arguments for and against having the week off but we're obviously using it as a positive.
"We have a good training program in place for the next two weeks so I think we'll be physically and mentally better for the time off and it will also allow players like Mark Janko and Terry Antonis, who missed our last match, the time needed to be ready for the semi-final."
Sydney played poorly in the last two seasons, missing the top six two years ago and finishing fifth and bombing out of the finals in the first week last year.
So coming second in 2015 should be highly satisfactory ... or is it?
"Finishing second, particularly after a frustrating few seasons for Sydney, is a fantastic achievement in itself, especially this being Arnie's first year in charge and with respect to what he believes is the true potential of this team," he said.
"In saying that, he reminds us all the time that we have not achieved anything yet.
"Nobody remembers who finished second in the league. What matters and the people who get remembered in history are the grand final champions, so that's what we're focussed on."
Brosque returned to Sydney at the start of the season after stints in Japan and the United Arab Emirates.
He still has a year left on his contract and he is determined to make the most of an opportunity to play for a club at which he feels at home.
"I've enjoyed this year more and more as the season has gone on," he said.
"The squad itself has an enormous amount of talent and I enjoy coming to train with these guys.
"And the closeness of the squad and staff has grown dramatically from what it was pre-season to where we all are now.
"I look forward to finishing the last few weeks strongly and coming back to do it all again with these guys next season."
Sydney is guaranteed a playoff spot in the next AFC Champions League and this prospect alone excites Brosque.
"I can't wait to play in the Champions League with Sydney FC again," he said.
"The last time we came second in our group to the eventual winner Urawa Red Diamonds, with only the top team from each group advancing back then.
"And even though I've played in two Champions League campaigns with Al Ain, I'd love another crack at it with this current squad."
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