For example some of the flash API is still missing from NME (a lib for the c++ target) & the performance (and more importantly bottlenecks) is quite different o

For example some of the flash API is still missing from NME (a lib for the c++ target) & the performance (and more importantly bottlenecks) is quite different on different targets. Not to mention all the browser limitations you have to work around if you use JS...