User blog comment:Plexioth- xD/Monster Hunter 3 Ultimate/@comment-76.114.237.96-20130121040728/@comment-4517339-20130121062037

Actually Dark Jin. FH & Adrenaline +2 are much better than Attack up (L)

Attack up (L) makes your attacks (at most) go up 100 - 200 more. But with Adrenaline +2 (When you are at about a 10th of your original health) Makes your attack power go up around 500 more.

To be honest I have never tried doing this with FH but yu can take my word for Adrenaline +2 because I have done it myself.