Stone,Sky,Sea

[hagare]

On the other hand, it is also true that the hardest thing in playing a DD is being able to maintain good DPS while handling the mechanics, and adjusting your rotation to each fight. In that sense the dummy tells you nothing. But it does tell you if you know your basic rotation good enough to be able to beat a fight in theory.

to be able to adjust your rotation to each situation, you must first know the basics of your rotation.
You need to be able to walk first before you can run.

Which is what stone, sky, sea was made for.
To see if your basic rotation is good enough or not.