[fellfold]

I argue it's more than 50% if the time due to how much you lose when you get 4-bet by a better hand. The exact number depends on your opponent. In this particular situation, you'll get 4-bet by a [big] flush or a boat almost automatically. How often is a worse 3 of a kind (and there aren't many out there) or top two pair going to 4-bet this? Almost never.