To calculate the overall star rating and percentage breakdown by star, we do not 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.
I have a WH-1000XM3 headphones. The noise cancelling is really really good as compared with WF-SP700N. WF-SP700N noise cancelling is very leaky as compared with WH-1000XM3. However, it is usable if you need portable and small earphones on-the-go.