Couple of fans from Inven.co.kr pointed out what SSO did in game 2 and 4 was actually a calculated strategy to counter the 4 men push. With the current 4 men push meta, it is somewhat inevitable to let your enemy to have one of the lanes freeze resulting in either your ADC or Top lanner falling behind. What SSO did (not pushing with 4 men and leaving just ADC to manage the lane as long as he can to just take the first turret and let the lane push towards you) actually prevented SKTK to have any lane deep freezes which let both your ADC and Top lanner to grow into mid-late game. I think it was shown a lot clear in the game four when Imp was able to pull way ahead of Piglet. As long as you can depend the 4-5 men tower dive following the first 4 men push, which SSO clearly did in both games with Dandy and Mata rotating Top, this strategy seemed quite efficient. Possibly a new upcoming meta?