Fort Mill had a very good season. Four losses were to Dorman (Viking Cup-neutral), TL Hanna (state playoffs-away), Clover (away) and Charlotte Catholic (away).
A good litmus test for measuring the strength of a team is to analyze their 3 or 4 best wins/draws and their 3 or 4 best losses. If you take a close look at all of the 4A results I think you'll find that Fort Mill is worthy of a Top 5 ranking.