That's actually been a feature of his other teams: His Australia in 2014 had enough really great chances to beat Netherlands at the World Cup. Celtic should have beaten Real Madrid at home, they should have beaten Leipzig, they should have beaten Betis, twice, they created enough golden chances to do it. His teams lacked the individual quality to put them away.
The system opens teams up, any team, but it also leaves it open too.
The chances-especially the early ones- have to be taken otherwise todays result is what happens.