You are right I cant. But then again nothing in MC even hit for damage close to 3-4k crits, which would be AQ40 levels of damage. The hardest hits you will take in MC will be 2k crits. Only Magmadar hit hard, and thats boss meant for a single tank which means your Warrior is just going to be tanking in regardless.
In MC you can still easily get a comfortable 10k health and 70% damage reduction. Druid mitigation is actually superior to warriors early game because their preraid gear is just damn good. You have access to several of your best in slot forever items even before you step into raiding, such as both armor trinkets, Ring of Protection (more armor than the raid rings you will replace it with) and Warden Staff. Later game upgrades for Druids mostly just provide them with stats that increase threat on top of the mitigation stats within the same items.
But what do I know I only raided for 5 years before I left
This is the ultimate “i am stupid” argument. Unless you raided with a Feral druid tank you have absolutely no experience relevant to judging wether or not a Druid can tank which means your whole raiding experience useless.
Vanilla also wasnt out for 5 years, so listing that you played expansions after Vanilla is equally meaningless.
There is a ton of information, theorycrafting, math and evidence out there that Druids are perfectly capable tanks. Your own refusal to read up on the available information is not my problem.
Correct me if I am also wrong but only prot warrs have mitigation against crushing blows hence there preference for raiding as the spike damage dosnt drain healers so much early in the game when everyone is trying to gear up .
The current Meta for Warrior tanks is that they will tank using Dualwield and no shield to increase the threat ceiling for DPS. Greater Stoneshield Potion make up for the lack of armor from not having a shield, so they will get crushed as well.
Since I have hopes that you are not just another person who refuse to inform yourself, I will provide you with a link that examines warrior and druid tanks on threat and mitigation. Hopefully you will learn something.