The number of doubled contracts played by SA was quite high I think. Makes sense. Desperate Italians double everything that might go down, and bid stretchy games against which SA take insurance and get doubled. Or something like that. Just my impression after having looked at a few boards.
But the Italians' failure to double this 3H may have costed them the match. +150 was minus six IMPs while +500 would have been +4 IMPs, and assuming that they will bid and make (undoubled) 6♠ on board 32, they lose the match by 6.7 IMPs.
Anybody knows what happened?

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SA Played 3H (undoubled) in EW down 3, and 3N making in NS