Personally I like the VTEC system and most of it's variants but I don't see it as the best system out there.
I consider BMW's Double VANOS and Valvetronic to be the best system of valve adjustment. It beats all other systems in every aspect.
VTEC is good but if really needs a good upgrade. I hope that Honda will soon figure out how to get a smoother transition and better optimisation. As of now they have one cam setting that is good from 1200-3000rpm and when it switches (around 5-6000rpm) the cam is optimised for about 5500-6800rpm. They need to make a system that is effective from idle to redline (as BMW have).
Power, whether measured as HP, PS, or KW is what accelerates cars and gets it up to top speed. Power also determines how far you take a wall when you hit it
Engine torque is an illusion.