IMO most QH, or stock type horses at better built for it. They have always for years and years been the "ranch" type horse, cutting a cow is more of a ranch thing. They have then mind, breeding and agility for it. Of course all QHs don't.
They are known to be smart, small, and quick which help.
Its not that other breeds can't, but it seems the QH is more geared toward that type of thing. At least they used to be.
Specifically, I was wondering about international breeds that have been used historically around cattle. Some of the Iberian breeds come to mind, like Lusitanos. Or Chilean horses as an example from the south.
They are quite good at it. Cadabra, an ASH stallion, is being exported to Canada soon, and he will be put in reining/cutting training. Our 'camp' section of a campdraft is quite similar to cutting, though much shorter and less intense.