One thing I noticed is that some tactics (that are time consuming to implement if one has to rearrange its AI nodes) that are quite effective are implemented by some players that dominates and the others will adapt only very slowly (I am one of the latter).
So it can be that a successful tactical procedure was discovered already in February 2017 and it gets replicated by the top20 only in August 2017.
I think this is due to the fact that if the one "dominating" is not always there farming a lot of points, there is not much reward to develop a counter - that takes time - since the points lost are a little. In this period, for example, I do not care much if Miojo or Milkhunter beat me because I focus first on those sucking more than 7-9 points from me. If I would encounter only Miojo or Milkhunter I would develop against them. Instead the omnipresent Chris is the enemy.
The moral of the story is: in GM the average level become slowly more and more higher because more players implement successful tactics that before were used by few.
So if you are new and you got pounded, don't get discouraged because in GM one is against tactics that incorporated evolutions over months, that one needs to digest first before being able to handle them.
And, I would say, the guys floating (floating, not hit and fall) around 2100+ now are some months "in the future" in terms of tactics implementation compared to the rest of GM.
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