Even if we assume Apple and Samsung sold every unit quoted in the article as "Shipped", Apple sold/shipped 22.9M units to Samsung's 7.9M units. People sure did vote with their money.
I don't see anyone disputing that Apple sold more tablets that Samsung.
But remember there was a time when Apple sold more smart phones than Samsung, but Samsung had a higher growth. You do remember what the next step was? Samsung started to outsell Apple in total number of smart phones sold.
There was a time when Apple totally dominated the tablet market, now Samsung is growing fast. There's nothing that indicates that the next step will be in any way different from what happened in the smart phone market.
This, btw, is the reason why AAPL is going down recently. The market doesn't care about the last quarter. It cares about the next quarter and the quarter after that, and so on.