I will object to the scoring of this board. Since double dummy defense will always find the right lead (a heart), of course, 3N will score poorly. In real life, a spade lead will give yield a 9th trick immediately, and a non-heart lead gives 3N plenty of chances, 3N will make frequently (imo). On a non-revealing auction such as, 1D-1N-3N, the chances of either major suit being led are fairly equal (again, imo).