There was no ‘secret Nintendo plan’. Nintendo wants big launch. Every console maker wants big launch. Nintendo said, “We are delaying the 2016 holiday launch because of software.”
I am also beginning to hear something I heard frequently back before the Wii launched: “Nintendo plans to make Switch the secondary console to PS4 and XB1.”
It isn’t much to say anything about Switch sales, but we can say for certain that Nintendo had no intention of a ‘soft quiet launch in March’.