If you do get a difference, please blog it. Also, if you do get a difference, try OPTION (RECOMPILE) on the query, see if there's any change. Shouldn't be, recompile just lets the optimiser know the number of rows for table var, not the data distribution, but should be included for completeness.
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability