By Matt Smith DUBAI (Reuters) - From outscoring Jordan Spieth and Rory McIlroy in Abu Dhabi to barely making the cut in Qatar, amateur Bryson DeChambeau has discovered that his unique "scientific" approach cannot always prevent the vexing dips in form that dog every golfer. The physics student's mixed performance on the European Tour's so-called 'Desert Swing', the final leg of which starts in Dubai on Thursday, may have bolstered the argument for his detractors. Two weeks ago in Abu Dhabi, the 22-year-old shot a first-round eight-under 64, two clear of four-time major winner Rory McIlroy and four better than world number one Spieth in just his seventh appearance at a professional tournament and first on the regular European Tour. More...