Any type of meat you can cook on any other type of BBQ (gas, charcoal etc) can be cooked just as well if not better on a pellet grill due to its accurate and automated temperature control.

However, you will find that many people like to cook beef briskets on pellet grills. The reason is, that as a large beef brisket can take over 12 hours to cook properly, on other BBQs that would have meant a lot of time managing and monitoring the fire and the meat.

On a pellet grill, especially one with WiFi connectivity and App support its very easy to smoke a brisket overnight for 12-plus hours with very little effort.