You’re fully capable of screwing over the initial push for horde/alliance with a few frost mages/hunters at the appropriate chokepoints in 1.12 AV. Put 10 people on D and you can shut it down completely. The reason why people don’t? They get flamed by their own team mates for dragging the game on. They want their rep farms done. They want more honor/hour. Etc
I linked it again so you can reread it. It looks like you didn’t understand the first time so I trimmed it down so you have a chance at it the 2nd go around.
You know nothing about how armor works. Unfortunately for you, I do. And the devs of modern servers do, nowadays.
http://www.kurai.com/wow/naxx/maexxna.jpg
It’s a bit lengthy, but it shows you the process of how armor is calculated on bosses.
When it comes to raiding and pvp content, it’s not so ridiculous. Leveling and dungeons 1-59, maybe not. It’s well over 90% accurate though, dynamic respawns notwithstanding