Speaking from an economic viewpoint, Bernanke gave two things to market: 1) Bond purchases of 45 bn per month - not a great amount but nevertheless its a plus amount, rather than same or being a minus. 2) Inflation upperband of 2.5% - this increase of 50bps in inflation upperband must be bullish for equities medium to longer term.
Sure enough the 2nd gap closed before the big movements starter. So obviously, anything in the 1433-35 range preopen was a free money short....