The Kentsfield scores seems about right to me, in tomshardwares interactive chart QX6700 scores ~293k integer and ~159k floating point.
Integer: http://www23.tomshardware.com/cpu.ht...=694&chart=160

E6400 scores more than twice as much as X2 6000+ in Sandra MM Integer, hard to say how important this bench is in real world performance. E6400 also outperforms dual FX-74's in this bench so 33% more from Barcelona over Kentsfield isnt revolutionary, but 66% MM FP would be impressive if true, which its most likely not. If Fuddy-boy had access to Barcelona he wouldnt have posted that fake screenshot would he?