I know some LM users use LM to run their mid and end of year Tournaments...they create a "tournament" league, transfer golfers to this league and run tournament(s).  But if I was running many tournaments I would want to use the Tournament Manager...because it specifically designed for this purpose...and is very fast for running tournaments.

A good analogy would be this....you can use Microsoft Word to build tables in a document...but its awkward.  If you were building many tables you would want to use Microsoft Excel because its designed specifically for this purpose.