The [skill description for Fists of Thunder](http://eu.battle.net/d3/en/class/monk/active/fists-of-thunder) reads:

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> Generates Spirit faster than other Spirit-generating skills due to the high attack speed.
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If Fists of Thunder has a higher attack speed, does it mean it deals more damage as well? Does it mean other on-hit effects (such as +life after each hit) get triggered more often?

And how **much** faster does Fists of Thunder generate Spirit compared with other generators?