Do you have a log you can link?
edit:
nevermind,
i found you (creepy)
It looks pretty decent - though I'd say the biggest compete with stam for spike reduction is tied to the fact that most burst abilities hit you when you are at 100% health. Meaning that you won't see any meaningful reduction on the biggest hits that you're taking. That being said, more help when you need it most is certainly attractive.
Taking something like Tyrant's Decree and going into these spikes with an extra 99k health and 456 bonus armour might provide more help in the windows that matter.