It just means I rate him slightly higher than Martial and Rashford, What makes it so hard for you to understand?
If you think Rashford and Martial is better, then its fine too, as I also rate them highly. But if you insist no way Sancho is slightly better than Rahsford and Martial, lets agree to disagree then.
Also, remember, the current best player in Premiere league, De Bruyne, also shined in Germany league too, before he came back to England and become a truly world class midfielder, an even better player.. Shining in Germany league doesn't mean he wouldn't shine or do even better in England, its really weird logic if you think he wouldn't.