Retrospectively you are right. The difference, this time round is the composition of the market. In previous recessions the market was really mutual funds and pension funds. This time round the market is driven not by these long only, value and income funds, but by hedge and arb fund. The point is, that these guys are never neutral. They all want to be on the "right" side of the market so you would get quite a different result than you would have got before.
When the first shots were fired in the last Iraq war, the market went up in anticipation of a swift victory. This time round we must remember that we have had a bull market for nearly 4 years and once housing falls, spending falls, oil starts getting above $70 who knows where the bottom will be.