If the trade is surrendering the pick unconditionally this year in exchange for a guarantee to get a pick, then I'd say there's a statistically better chance of us getting the pick this year via lottery than there is a chance of us not getting the pick next year. Which is to say that us surrendering the pick this year would be in vain, since it's probably unlikely we get to the point in 2013 where we don't have a pick, and that there's a better chance of getting it this year than there is a chance of that scenario playing out.
Agreed. Which is why my very first post in this thread was we give '12 to GSW and GSW gives us '13 and this year's 35.