Beware the words!
Levels aren't tiers - the former release equipment in the shop progressively as you earn experience points (XPs) from playing. There's no direct relation between the two terms.
Your question is about tiers, which are mainly controlled by the average.
A Master needs 40 ranked rounds in his tier with an average of 63.00 to advance to Tour Master.
Your average is "saturated" with more than the required number, so it's but the average to observe.
Hit it straight!