SQL 2008 compared to other RDBMS vendors

Just came across these links, hope it helps in making any decisions or migration...

SQL Server 2008 Vs MySQL
http://www.microsoft.com/sqlserver/2008/en/us/compare-mysql.aspx

SQL Server 2008 Vs IBM DB2
http://www.microsoft.com/sqlserver/2008/en/us/compare-ibm-db2.aspx

SQL Server 2008 Vs Oracle
http://www.microsoft.com/sqlserver/2008/en/us/compare-oracle.aspx