Dude... when you're 3... they are the same thing.
Do you guys even have boys? Don't you have a bunch of girls BB? Didn't you ever play football with them? Or something of that nature? None of them were ever a little tomboyish as little girls?
The kid in that picture is not 3. He looks about 6.
I have a son, but I played all sorts of sports with my girls. Also taught them how to lift, head butt, grapple, play fantasy football, etc.
But we're talking about boys and pink nail polish. There would have been volcanic eruptions in my house if my wife ever tried to paint my son's toenails.

You have to raise boys to be boys, not girliemen.