Honestly speaking ,Tourweaver6.5 HTML5 tour is not as powerful as flash tour but the basic features is the same except for some buttons popwindows issue .You can check this sample :http://www.easypano.com/gallery/tourweaver600/tw650demo4/tour.html
Now tourweaver7 ,we have optimized a lot of features and try to make it same as flash tour .we have optimized popwindow ,thumbnail and other features.Now it is just a beta version and we are still developing it . Here is a gallery of Tourweaver7 Beta
When you published you can choose " Merge flash and HTML5" format tour .
Because if you publish as this format tour ,it can be show as flash tour and HTML5 tour based on your browser .
For example ,if your broswer is IE it will show flash tour ;if your broswer is safari it will show HTML5 tour.
So it is very useful for different kinds of broswers.
You can try it .