They were losing to them as well not that long but now they have had easy wins against the same
And outside Poland :
They have defeated Movistar, Gamerlegion, BIG recently - the only non Polish teams they played
So the 'improvement' is surely there
But they defeated BIG 2-0 to take revenge too.
Moviriders - the best team from Spain.
Gamerlegion - but they are the only non Polish team they played recently so your statement is valid just for one single loss against BIG whom they defeated later back again