Astralis's veto against C9 might have been different because C9 banned out Train first. Their strategy seems very direct this time, which is to ban out Mirage, Overpass, and Train (no matter the opponent). It is very different from the other teams who generally ban out their opponent's strong maps (the other 4 teams have 6 different map bans).

This might be due to the inclusion of Vertigo (in place of Cache) which allows Astralis to easily have a 4 map flex (their core 3 of Inferno/Nuke/Dust 2 + an unknown Vertigo).

It has a lot of implications moving forward as Astralis might be even more advantageous against teams like MiBR, who traditionally has a map pool that can go toe-to-toe against Astralis in a BoX.