Bobcat is 2way(2ALU+2AGU) design,has 90% of Propus and is a low power design with solid perfromance.One can expect Bulldozer core to stump over Bobcat core but both have less ALUs/AGUs than 10h. Number of units means nothing if you can't effectively use them and you know that.The number of core level changes is pretty big,from L/S improvements,prefetch,BP,shared L2 etc..As Anand wrote(info from AMD) ,per core performance will be better than 10h.