It has always struck me as the lighter, more "user-friendly" version of other frames. Prince had the Rebel Team and Ignite Team. Wilson has the 6.1 Team.
Team might be synonymous with "Lite."
Unrelated, but the first instance of "Team" I can point to is the Babolat Pure Drive Team, which didn't have a heavier or lighter version. It was simply the Team.
Get in where you fit in.