I have done some calculations before and Grab point system seems to have the most value compared to other point systems.
However grab's voucher exchange is very limited.

For example, if you want to exchange the point for groceries, grab only allows Jaya grocer. Other credit card point rewards point systems allows Alot of options.
Although grab allows you to exchange for voucher with much lower points compared to other systems, your choice is very limited as of today.

Perhaps I haven't figure out the best way to utilize the points yet.

Surprised no feedback here.

Setel is Petronas's subsidiary if i am not mistaken.