Before this year's MotoGP season began, Gigi Dall'Igna said: "The GP15 is a real Ducati." The manufacturer's project boss, who joined from Aprilia at the end of 2013, is right.After several seasons in the doldrums, the Italian brand is back with a vengeance. Although they're yet to win a race, both Andrea Dovizioso and Andrea Iannone have been on pole this season and both lie ahead of double world champion Marc Marquez in the standings. Only the Yamaha duo of Valentino Rossi and Jorge Lorenzo are ahead of them.The spectacular slump in form by Marquez, the return to the top of the ageless Rossi and three wins on the spin from Lorenzo have somewhat eclipsed the strides made by Ducati.Since returning to the grand prix class of motorcycle racing in 2003 - after a 30-year absence - the Italian brand has had little to show other than Casey Stoner's title in 2007, and had fallen further behind the pack in recent years before signing Dall'Igna.His influence took a season to produce results, but from the first race in Qatar - where Dovizioso took pole and finished second - it was evident that the roaring red machines would have a say in the title race.Dall'Igna delivered several titles for Aprilia in World Superbikes and he is quietly confident of being able to do the same with Ducati in MotoGP.Though he still regards the bike as a work in progress, the most noticeable difference is that the GP15 is fast. Very fast. There's no denying the Ducati has grunt.With the championship moving this weekend to Spain's Circuit de Catalunya and its long straights, that power should come to the fore...