Block happens before resistances&armour in calculations. So for non-phys, non-ele it gives you 13000 * 0.2 = 2600 flat damage block, for ele its 13000 * 0.13 = 1690 flat damage block and for phys its 13000 * 0.58 - 5567 = 1973 flat damage block. By flat damage block I mean how much you gain from having blocked the hit all, not comparing it to lower shield block value.
Let’s assume damage distribution is the same for non-phys damage types (it’s not, ele is dominant) and take the average = (2600 + 1973) / 2 = 2286.5 and phys hit value remains the same. Those two are maxhit values. Then for ehp purposes, build has 70% block chance and 100% uptime, so thats 2286.5 * 0.7 * 1 = 1600.5 and 1973 * 0.7 * 1 = 1381.1. We’re not interested in calculating builds’ total maxhit and ehp, only what block mechanic gives you.
So:
Block_maxhit(phys) = 1973
Block_maxhit(nonphys) = 2286.5
Block_ehp(phys) = 1381.1
Block_ehp(nonphys) = 1600.5
Now lets do the very same calculations for the original version:
Block_maxhit(phys) = 11000 * 0.72 - 4700 = 3220
Block_maxhit(nonphys) = (11000 * 0.2 + 11000 * 0.13) / 2 = 1815
Block_ehp(phys) = 3220 * 0.56 * 0.72 = 1300
Block_ehp(nonphys) = 1815 * 0.56 * 0.72 = 731.8
Conclusions:
- Stacking block for phys is worse when you have higher armour & phys res (duh)
- Stacking recovery 100% recovery only doubles your block_ehp for nonphys and thats the only thing your build gets out of it (defensively). The problem is you sacrificed damage to get there, and lower damage also means less leech → less ehp.
- Block provides low maxhit gains (duh), which are the things that get you in HC.
TL;DR - Block is a fraud mechanic.