"Tablet Optimized Apps" is pretty misleading, given that every since 4.0 ICS, many (perhaps most?) apps are defaulted to scale appropriately through the integrated OS. This is more or less how they account for differences is screen size, etc. as well. "Optimizing" doesn't necessarily require a different app, it can be coded behind the scenes to show more options or a different layout within the same app, lessening costs for paid apps and centralizing reviews, comments, ratings, etc. and lessening confusion overall.