that's just plain stupid, because according to your reasoning low levels are supposed to stay low, so literally there wouldn't be any need to take part at all...
there should be a simple filter that puts players together according to their level, like lvl 1-50, 50-100, 100-150 and so on, that way everyone partaking has a chance of achieving something and not only veterans that keep dominating everything while newer players won't achieve anything ever, because they'll always stay behind, even more so because the high rollers keep getting more experience through the league than the newer ones.
best example would be my new cluster, there were a total of 8 players that i was able to barely beat, everyone else is around 100 lvl's higher than me with like twice as much damage so i'm already doomed to end up at the bottom