AirStrike damage a lie?

if you can use it without a gun or any weapon, it sounds like it's a summon formula: using your stats and the skill % in the description as a multiplier.

It's not, though, there's a clear difference in damage when you buff your attack - when I use a 20 att pot my Air Strike damage goes up by well over a thousand.

It's even more obvious if you try to Air Strike with valentine's rose or some nubby weapon equipped - I think I saw some 2-4ks with a White rose.