From what I've seen 2~3 charge abilities that can create Dark/Light only shine during "Unleash" when you can spam them without consuming charges. Otherwise, spamming strong 1 charge abilities such as recoil Dive or Razor Fang quickly outpaces 2-3 charge abilities such as penta peck. Best case scenario Penta Peck will do as much damage as Razor Fang, but generally Razor Fang will be stronger (by quite a margin) and you can do 3 Razor Fangs for the amount of charges it takes to do 1 Penta Peck... hell while Bird is waiting for his 3'rd charge to refresh Tiger would've already regained ~2 charges.. its quite a land slide.