My vx and my exige have near identical power to weight ratios. Somehow though the exige feels in a different league.
Torque
Pretty much the same torque / weight ratios and gearing..
I'll go for chassis and electronics.. On the road you often have to watch how you deploy the torque (part of the fun I suppose). The Exige with its relatively advanced traction and stability systems means you can drive them nearer their limit without risk being bitten..