As crazy as it sounds to report, Ghost Recon Wildlands outsold The Legend Of Zelda: Breath Of The Wild in the month of March. That's kind of incredible when you consider how well the Nintendo Switch has been selling and that over 70% of gamers who purchased the console bought a physical copy of the game. That said, Ghost Recon Wildlands went out for PC, PS4, and Xbox One while Zelda only went on Switch and the Wii-U. Even so, many have speculated the digital sales of Zelda (which Nintendo has not shared) would show far more Switch owners with Zelda than that 70% and could very well tie or perhaps slightly surpass Ghost Recon Wildlands.
I'm sure this fact will float around the discussion boards in arguments for awhile so both sides can reference the above and bring up the relevant facts when someone drops it trying to start a flame war!