There continues to be a lot of comparison between now and early/mid 2008, and I continue to say that the comparison is not appropriate. There are some similarities, but there are quite a large number of differences. One of those differences are sector behaviors.
In 2008 nearly everything (with the exception of Staples and Utilities) was showing weakness all together. But right now the market is much more mixed compositionally. Both Technology and Consumer Discretionary are still holding up fairly well, pretty much two of the last sectors that should if we are entering into a crash phase.
My $0.02 at any rate.