It contributes to a lot of professions:
Combat Sense
Due to it starts skilling pretty fast it gives you initially a nice boost in a lot of hit related professions and in evader and dodger profession.
Also every 800 levels it gives you an HP.
The perceived boost in return i would expect to be comming from the fact that you initially get a fast improvement in your efficiency.
Though with all the L weapons out there i would think that this has become less obvious then it was a year or more ago.
Cheers
Siam