Salzburg - Hartberg Football prediction

Salzburg is looking really nice at the start of the season. They are in next round in european competition, they are the only team that is on 100% after 3 matches, they are in really nice row of winning matches (especially when playing at home).
Hartberg is in mixed shape. Their opening wasn't very good. They managed to win last one, but still, it won't change a thing today.
Looking at their performances, I see no other outcome than home win. Since the quality difference is big here, I think we can easily expect at least 3 goals in this match.