Why is it common to get ground armor upgrades before you upgrade shield?
Isn’t shield upgrade a much higher priority than ground armor?
Because, the extra 50/50 resource expotentially benefits more than ground armor, since if you get oracles, that will benefit it. If you have blink stalkers, retreating regenerates shield points, and shield is affected first then hit points. Cannons, buildings, and all army compositions benefit it.
Armor upgrades doesn’t benefit archons or immortals. Shield upgrade also helps conserve shield battery energy, since reduction of shield points means less energy required to regenerate shield. Like, I never actually get armor upgrades.
Why do most protoss players still focus on ground armor upgrade?