To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
This was a new one on me - hadn't heard of Stafford before. Sure he wasn't around when my son was having Thomas stories read to him. However, any story with engines in is a winner for my grand-daughter, she loves them.