Ok I just did some testing on target dummies. I have come to the conclusion that the result might just be the high damage fluctuation of the skill:

I did 16 tests; 8 after full Halone Combo and 8 with nothing beforehand. Here are the results:
Full Halone Combo:
184
188
193
194
180
184
184
194
AVG: 184.63

Nothing Beforehand:
177
178
176
177
179
187
183
192
AVG: 181.25

I think that 3 point of damage might be evened out with some more data. Sorry for the confusion guys!