More accurately, better if considering antennas of equal footprint area, however chip antennas are usually designed to be very small (like this one) as the extra cost is only justified when space is at a premium.

In my experience in practice a good-sized PCB antenna beats tiny ceramic antennas. I would expect the radio performance of this Pi to be pretty poor, though better than using one of those tiny USB adapters (which also typically use even smaller ceramic antennas with really awful ground reference when used in a Pi as they are designed for use with laptops).

Also, another reason for their smaller size is that ceramics can have very high dielectric constant which reduces the size of the antenna.