And Xavi believes Chelsea, under Guus Hiddink, will do enough to keep the tie alive tonight - despite Barcelona's firepower.
Related ArticlesBarca's perfect 10Barcelona v ChelseaCity line up £40m Eto'o bidCatalans love to hate ChelseaHiddink turns to DrogbaPaper View: Chelsea set for Lionel Messi showdown in Barcelona"It would be a huge advantage, in fact it would be a bit of a dream, if we could hit four goals against Chelsea like we did that night," said the 29-year-old.
"What we can repeat, however, is the level of play and the intensity with which we attacked Bayern.
"My opinion remains that we are not likely to finish the tie in the first leg – the match at Stamford Bridge will be decisive.
"Look what happened when Chelsea won at Anfield. Despite that victory they had to fight to stay alive in the second leg and what I feel is important is that we now have enough experience to play this cleverly over the two legs of the tie."
Xavi also believes that Hiddink has changed Chelsea's game since Luiz Felipe Scolari was sacked earlier this season.
"They play a very effective game, but perhaps you could say it is not the most beautiful to watch.
"We know what Chelsea are about. They are about playing physical and tough football - we like to play football a little bit more beautiful than that.
"If we play football our way and at our pace, we know we will be very difficult to beat.
"It is not the Barcelona way to change our game just because some teams play tough football.
"We can out-pass you and we can out-think you - that is our brand of football."