Sooo, by the reasoning that you are applying, setting the VTEC to kick in @ 800rpm would maximize the potential of VTEC motors. NOT the case, actually far from the it!
OK, lets do this Kindergartden style.
H22a lower profile cam profiles = low - mid RPM range power w/ fair to good fuel economy and modest performance.
H22a high profile cam profiles = upper mid and high RPM power with HIGH output and poor fuel economy!

take the case of the H23 , one cam profile for intake and one for exhaust....NO VTEC!
good low end power w/ great mid range up to ~6200 RPM.
Change the profile one way and imrove low to mid range power while hurting high rpm or change it back the other way and improve upper rpm power while killing low RPM power.

well , W/ a VTEC motor you hav TWO " performanc range cams" in one as if we did'nt already know this>>>
use the low rpm range cam too long and upper mid range and high RPM power dissapear.
use the high rpm cam too early and lower rpm power will be under utilized......