But Mirage-sensei it also depends what kind of team you have and if you need AoE Def down or not and how fast you can burst with your team :O
My wind team is slow and can only cover AoE-B-Frame def down. Therefore I would go with Hercules.

A dark team with Satan AW, Pluto, Osiris and Chernobog will probably run with Shingen because of snipper as ex.
You can also use Dark Ama/Samael later instead of Osiris/Satan AW and run with Hercules+PF
Which is why i didnt say anythin like "you absolutely must run Herc". She is, like any other, can be better or worse in certain situation, it's just that it is better most of the time.
One thing i forget, is that the def debuff on Herc burst has much higher accuracy than Sniper, Ambush or most debuff ( and it is 25% as well if you can MLB the weapon), so depend on what you want: faster debuff or more reliable, or just want to control your pacing