Swaggering Manchester City turned on the style with a devastating display of attacking football to crush Portsmouth at a buoyant Eastlands. Robinho produced another captivating display to inspire Manchester City to a thumping 6-0 win over Portsmouth here Sunday.With Khaldoon Al Mubarak watching, City ran in six goals as Portsmouth were unable to cope with a hugely impressive attacking display from Mark Hughes's side. Jo, Richard Dunne, Robinho, Shaun Wright-Phillips, Ched Evans and Gelson Ferna