Originally Posted by
Coldfrostzero
Bosses are beaten in two ways: by knowing the strategy and your level of gear in raids. If you don't have the gear to survive the AOE attack, heal the group/tank, survive a massive hit as a tank, or DPS to beat an enrage timer...not even a perfect strategy can beat the boss. Look at Jaina, the first kill was mathematically figured out to how much DPS every single person had to be pulling to kill her. Can't do that in subpar gear.
Have you ever killed a boss on Mythic? Hell, even Heroic when it first comes out? Blizzard has gotten only slightly better with making the first couple of bosses in a raid weaker than the final boss in the previous difficulty, but sometimes that's just not true either. Look at how hard Heroic Kil'jaeden was for a lot of guilds. Sorry if you don't think gear plays an important role in killing a boss. You're just wrong.