I also sit for 2 hours a day, and I see the same benefits. I wouldn't normally post a "me too" message, but I don't see too many comments about meditating 2 hours a day.
[1] Recordings of the talks at that retreat are linked from this URL: http://unfetteredmind.org/audio/podretreat.php?code=PAP#here They're the PAP01-PAP10 links.
Even though 2 hours seems like a lot, because of what it is (focusing the mind, learning to not overreact to external stimuli, stability of the mind), it makes people able to be very highly productive throughout the day.