After 4 successive failure to bring 3 points, I think that Lazio will try its best to win or at least draw in this match. Waiting 15 minutes is a wise thing to see how Lazio will perform in this game!
Juventus will definitely not underestimate this match, they will surely fight to win this match and make their position stronger at the top of the table.
I would also have picked Juventus but it's their defence which is making me uncertain about the winner in this game. Juventus have been scoring well at first but also are giving away goals later on. Their defence have been caught many times during the last few matches. Lazio are decent attacking side so I think they should score against Juventus today. I thus find BTTS better in this fixture.