From the article, HTC's market share growth in the given interval was 4%, compared to Apple's 3%. Considering they achieved that growth on significantly lower margins than Apple (and consequently much less revenue growth), I don't think it's reasonable to claim HTC are riding the smartphone market growth much better than Apple.

Samsungs 10% growth is more impressive, but again was achieved with much lower margins. Apple could afford to cut their margin significantly if competitive pressure forces their hand, and unlike RIM they have a product which is high demand.