It was a bloody hard fought battle. And Henry had difficulties with the loyalty of his forces, like Richard at Bosworth.
Suppose that he loses - he and his chief supporters present at Stoke fall in battle or are taken alive and summarily put to death.
Not all Henry´s supporters are present at Stoke. Some are away, like queen Elizabeth, her ten month old son Arthur and the Archbishop Morton of Morton´s Fork.
What happens to them?
Who will be in Edward VI-s government? What policies will he pursue? Who will he marry?
Remember, he is young and does no enjoy a very royal education and upbringing (khm, Lambert Simnel)....