Could be. I see a lot of the same players all the time and its amazing how poorly their trophy counts represent their skill level. Pretty much anyone who has 2000 trophies or more would easily have 5170 trophies if they had level 6 epics and played with nothing but KMs. I've played guys dozens of times and they've never used less than a KM once. They're not good players. They're just obsessed with staying at 5170 so people think that they are.
If anyone thought I was exaggerating, I recently played this "master" who bought every epic to level 6 and plays with only KMs. No decent finishes in over 15 tournaments, never playing above the pro level, so he didn't win these epics. He is now close to maxing out the 5170 trophies, if he hasn't already done so in the past.