Not sure why you've been down-voted. Twitter is so different from Facebook in terms of what it's primary use is, that it doesn't make sense to compare them, and

Not sure why you've been down-voted. Twitter is so different from Facebook in terms of what it's primary use is, that it doesn't make sense to compare them, and while I wouldn't quite word my response this way, I agree with the sentiment that Facebook usage data doesn't tell us enough to predict Twitter usage under higher character limits.