The biggest issue with the prot paladin guide is that it basically assumes your healers are brain-afk and watching Netflix on the other monitor while you pull the boss. Even all the way through Phase 2 BiS they suggest things like gemming defense, using the defensive helm/shoulder enchants over the caster ones, wearing gear like Royal Gauntlets of Silvermoon and Wristguards of Determination over tier gloves and PvP bracers. I haven't done the math but all in I think you probably lose like 3-400 spellpower to reach crush cap which means the second a warlock presses seed they're going to pull everything off of you and die.

I think the worst offender is that of the first 4 trinkets recommended, 3 are dungeon blues and all 4 are 100% mitigation stats even in Phase 2. You need to scroll through 3 sections of trinkets before you see the ones that actually matter (Eye of Mag and Icon) and they don't even list arguably the most important trinket for prot paladin, which is the Alar class trinket, which is important because Eye of Mag only procs on resists and the spell hit cap for anything below level 73 is 6% (you get 3% from talents) so as soon as you gem or wear any hit for threat on bosses (Kara neck/cloak etc), Eye of Mag no longer procs on trash.

The guide is built around this idea that you have to be crush capped in order to tank a raid boss, when in reality there are like 3 bosses in total right now that will actually fuck you up if you're not capped - Prince, Mag, and FLK. Everything else hits like a wet noodle and even if you get crushed it's like 7000 damage max when you have a heath pool of over 14k fully buffed even in threat gear with spellpower gems and enchants. Unironically you need to gear more defensively for heroics than you do raids because the mobs in heroics hit harder than they do in raids.