User blog comment:Ultrahi/Should i have monster hunter avani as leader or should i have deathless hadaron as leader?/@comment-26832517-20160417185121

What kind of content are you doing and do you need help with BB gen?

For arena, Hadaron is going to edge out Avani 90% of the time because he increases both attack and def by 130% even at full HP, whereas Avani increases Attack (80%), Spark Damage (100%), BB gauge (1-2 BC per spark I think), and crit rate (20%). The increase in Spark Damage and Spark BC are next to useless in arena content, so Hadaron is the better lead there.

However, in other content like raids and questing, Avani can be better because her increased spark damage will help you kill bosses faster (so long as you can spark somewhat decently), and her BB regen on spark will keep your BB gauges full 90% of the time, even against a single target.

But it all depends on what you need.