How did I get radial tagged even though there's no one in the server above 500k renown?

i have 1.46mil renown (leaderboard) and the highest renown in the server aside from me was 462k

I think you can get radial tagged as long as you have more than 500k, it doesn’t matter how much your hunter has.

Although I could be wrong about this, since I have not been willing to test

Probably a slight bug, I was radial tagged once by a guy close to 500k renown (villain), you cannot get radial tagged by anyone of low renown (below 500k) as far as I know.

Incorrect, if you have over 500k Renown ANYONE that has at least 1/4th of your current Renown can radial tag you