The relevant bit your comment is: while most people indeed testified that the experience was not as good as Google docs, it wasn't that terrible to most of the people.
Turns out that it really depends how well you're connected.
Being connected 99.9% sucks more if that 0.1% is a crappy connection that drops packets occasionally as opposed to just saying "I'm online most of the time, I don't care if I need to edit the doc that rare 0.1% of the time when my connection is broken for good)