I actually think Stuart wins the skyline battle because it will be the tallest in its immediate area. So even though it's a tad bit shorter and at a lower starting elevation, it will still make more of an impact from afar.
On the other hand, the black wall/red cladding combo on the back of Province is garish enough to stand out for the long haul, especially from the common. (unless there are plans to eventually block this wall with another building... please???)
So yeah, it's close. No wrong answers here really.