So according to the article and chart, this system would deliberately match players with people that have purchased items that they may find useful, in order to tempt them to buy said item. If they buy the item afterward, they're placed in a game where the item would be extremely useful. If they don't, the system makes a note of it and presumably keeps trying.
Does this feel really sleazy to anyone else? It's one thing to have the microtransactions in the game. It's another thing to drop new players into games where they get wrecked in order to get them to buy into it. Activision has reached out to say that the system isn't in use in Destiny or their other current games, but that says nothing for the future.
EDIT: Here's the chart for anyone interested: