Why would players of different championship levels be in the same chamionship?

Hi

One of the guys in my guild is championship level 18 and has been drawn in a group in his championship with 9 players thats rated level 19 and 3 players thats rated level 18.

Is this a bug or is it supposed to be like that?

Tx
Coach qBaLLs
It's normal, at high level teams with 1 level difference can be mixed in the same league.
Thanks PierrotLL can understand it happening. But unfortunate for the lower level teams but inevitable at the end of the day
The promotion positions also are different.
So the higher level teams can lose a few and drop down table allowing the lower level teams to battle the double jump top 3 slots