Sometimes when I read the posts in threads like this I think of the Lake Wobegon Effect. Even if, by the nature of the site, results skew a bit to reading slightly faster than average, I have my doubts that the mean reading speed here is significantly faster than that of other literate people, even given a few outliers. There are always going to be a few outliers, emphasis on the few.
Speaking of myself, I couldn't begin to say how fast I read and as has been said above, my reading speed varies widely with conditions anyway.
And what difference does it make anyway?
It seems to me the point of these threads is about finding/making time to read and developing strategies in aid of that. Otherwise, I find there's a competitive edge that makes me uncomfortable. We say it's not a contest, but it apparently is. However, the only contest should be against yourself and your goals, if you care to think of it that way. Or just read.
Carry on. But the first time someone claims he started reading in utero, I'm going to call foul.