I remember watching a TS vlog where Warbirds specifically said they prep super heavily in advance on teams such as PRX and DRX as soon as they landed in Korea. He said the key to qualifying for international tournament was beating DRX and PRX. Rightly so TS beat PRX and managed to win 1st map against DRX on Haven with the famous "Go A strats" but lost map 2 and 3 against DRX.
The problem with TS is their consistency. T1 managed to qualify for every international turney cause they only to DRX/PRX and the 1 case of Peak early season GenG, but other than that they didn't lose any other pacific team. Every wins matters for getting points in this years season split (1 & 2), consistency matters and TS can't afford to lose to teams like weakened ZETA or the improved RRQ.