does adjustable cam gear do same thing as performance cams? if not, what's the difference in performance?

thanks

jason, please post in the appropriate forum.
no, cams and cam gears are 2 diffrent things.
cams change your powerband by holding your valves open and closed.
the gears just help to optimize your powerband.
on a 5s, we have a 'slave cam" design, where the exhaust cam is driven by the intake cam, which is not an ideal setup for cam gear adjustments, because you cannot change them independantly.
a 2jz gear fits the 5s with minor mods, and arron from ats can make them out of a stock gear.

^^ if you decide to go that route i have like 5 or 6 spare 2jz stock gears