As Mark Twain once said there are Lies, Lies & Statistic most surveys are not accurate just look at election polls.
Sparkly: The reason that MO who attend who attended the Siyam Hashas learn the Daf is as follows:
1)The Young Israel have their own pod cast of the Daf.
2)Many Young Israels have their own shiur daily.
3)I don’t understand why someone who has no connection with learning would attend speeches about learning for over 6 hours.
4) There was a Siyam Hashas at Congregation Shearith Israel on the Upper West Side which is a MO synagogue.