Why Can't IWM get over 80 (or 800 on the RUT)?

The Dow is over 12,000, the S&P is over 1300, why does the RUT have so much trouble getting over 800? On a psychological level, 800 seems like the next hurdle, but the if you look at the recent correlation between the Dow and the Russell index, it makes more sense. 

Since the lows of March 2009, IWM has had a much better run than the Dow so while 800 is big round number, it seems that compared to a historical valuation, IWM is overvalued by close to 100 points (or the Dow undervalued - right!). In any case, IWM needed a breather to let the Dow catch up to more historical valuation. Do don't sweat the round numbers. It's in your head only!