REORGANIZE seems to work as well as REBUILD all the time

On this MSDN Page it says if you should reorganize or rebuild based on the amount of fragmentation:

 5% to 30%   ->   ALTER INDEX REORGANIZE  
 Over 30%    ->   ALTER INDEX REBUILD WITH (ONLINE = ON)*

However, we have noticed that even with really high fragmentation (over 95%) on large and small tables, REORGANIZE works fine. (The fragmentation goes down to less that 1%).

Why does the MSDN page say this? Is it not supposed to work like it is for me?

Or is there a drawback I am missing? (A hidden problem if I don't rebuild?)