Interesting read. I am quite agnostic in terms of SQL Server and Oracle - both serve their purpose. Cost wise SQL Server hands down. Oracle for high-end performance.

In terms of 64-bit - I disagree with some of the points though. Increased memory will not compensate for lack of index functionality choice (i.e. Bitmap indexes, joins etc) nor partitioning at a transparent table level (as in Oracle with RANGE partitioning). Until SQL Server has that they will lose the large scale 200GB+ warehouse discussion - IMHO