1) I suppose you'll need to ask him. Be sure to post back if you get an answer. :)
2) Doctrine & Covenants 21:3 has unique wording that has been used to established the Lord's true birth day. The revelation came on April 6th, 1830. v3 says, the "church was organized and established in the year of your Lord." While nowhere says the Lord was born on April 6th, this is what some have argued is the Lord's real birthday based of this reference. Christmas is the celebration / recognition date.
3) While what you're supposing might be true, I think the reference is more towards a reference to his character. I am confident his level of responsibilities is above writing essays, debating, or running a marathon.