Panko is more flaky and coarser than most commercial bread crumbs. When you make your own, what you end up with, panko or bread crumbs, depends on how long you process the crumbs. The more time the bread spends in the food processor, the finer the crumbs get. I often prefer panko because it's lighter and airier. Breading made with panko or coarse bread crumbs is crisper.