Ok this is really going to be a question that the easy and right answer to is the word "both" however for this discussion let's take that word, any variation of that word or any other word or combonation of words that mean the same thing out of the equation.
You have to pick one or the other here.
For your point guard do you think his primary job is to initiate the offense or the defense.
For reasons beyond his control I am forcing Uncle Buck to say "offense"
Everybody else gets to choose their own reasons.
Now here is the hard part, you then have to explain why.