Seriously did you read anything from this thread? The people who downed the so called hard boss in SWP did that in 45 hours... spread across 5 days. That guy would go down at least twice as fast if you look at the time spent per day.
So why exactly did SWP last that long? Gating.
It would be fun to see how fast bosses would go down nowadays with gating... oh wait. T14 had gating. It took what.. 8 weeks in order to die?! Now multiply that number by the amount that people raided more in T14 than SWP.
16 weeks. 16 WEEKS WORTH OF CONTENT FOR THE MOST HARDCORE!