How big are those tables? Tables that are less than a single extent in size won't defrag at all. Tables that are smallish, say 2-3 extents, may not defrag fully. But at those small sizes, who cares.
"The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood"
- Theodore Roosevelt
Author of:
SQL Server Execution Plans
SQL Server Query Performance Tuning