Philippine traffic is horrible for the CVT. I'd follow the shorter interval, to be safe.
I've seen various NEW automatics (CVTs, dual clutch, even torque converter type!) overheat in our weather. Granted, that's under extreme use (track, three hour EDSA traffic), but that just tells you how bad local conditions are compared to US conditions.
In US forums, they recommend shortening intervals to 40k miles to extend the life of the CVTs for some of those JATCO boxes.
It's an extra expense, but so's a new transmission.
