I'm not sure where I got it into my head that damage from enhancements and global damage are different but there we are. Maybe thinking of a dif game...
I thought that the damage from enhancements was additive type damage and global damage was multiplicative but after a bit of searching and a lot of face palming, I have educated my ignorant self.
Thank you for correcting me on that, I want to continue to improve my build and myself.
With the Musculature Alpha, you can cap when it's a single target, like an AV/Hero. And what I'm just realising now, you only need to FS once(at max stacks) and 2 stack Siphon Power to cap the damage on all attacks.
With the Spiritual Alpha, the cooldown on Inferno drops by 3.3s and FS is 1.5s, in Pines.
I still think Musculature is the better option for general gameplay but the Spiritual would be better for team farming.