Quick answer
GNWL is usually better than RLWL because GNWL is linked to the general quota from the train origin or nearby stations.
Why GNWL moves faster
GNWL has a larger cancellation pool. More passengers book and cancel in the main quota, so GNWL numbers often move more visibly.
Why RLWL can get stuck
RLWL belongs to a remote-location quota. The quota is smaller, and only cancellations relevant to that remote section may help your ticket.
How to decide what to do
Compare your exact number, journey date, train demand and recent movement. Then track the PNR automatically until chart preparation.