It'll be interesting to see if the sales are sustained. Looks like RIM is playing up Flash capability in the TV commercials more than anything else, not so much the UI or the form factor.
Lately, it seems that the tablets which are getting the buzz on the web are the 10-inch ones. First it was the Xoom, then the Transformer for a few weeks. Now there seems to be some anticipation for the Galaxy 10.1.
I guess it all depends on usage expectations. If people want to take a tablet on the go, then 7-inch makes sense. But for use around the home or office, a 10-inch has obvious appeal. You would think the 7-inch products would make a better case if they're priced less than the 10-inch models, which are all now matching the iPad price.
It also seems that people are willing to concentrate on HW specs and design more than software now. So things like ports, thinness, keyboard docks, etc. are higher priorities than app. availability. But the presumption is probably that Android will get tablet app. support eventually.