Choose the Compare menu item to manually compare test
  results to benchmark files.

  DTM will not complete the comparison process
  automatically for any of the following reasons:

  o  You chose the option not to compare when you created
     the collection

  o  A test in the collection is only partially run

  o  Some of the tests in the collection do not run

  In any of these cases, you need to compare the test
  results manually before you can review the results.