Dominance

I see a lvl 36 player with Helen of Troy, meaning they have 10,000+ Dominance. I’m lvl 47 and only have 5500. Can anyone explain that?

They are someone who is taking advantage of this trophy system. They have purchased enough gems to unlock helen of troy and spent them all maxing out their troops and powers rather than levelling up their buildings. Im guessing their trophy count is also fairly high?