The game has always been a browser game, this change has been pretty beneficial and there's practically no difference in the game itself. All you need to make sure is that you have hardware acceleration enabled.
Why would a game be worse simply because it's a browser game? It runs exactly the same, in fact, even better than the previous version.
I have explained my reasoning many times, the previous engine caused way too many issues and headaches for me while developing this version. This new engine however proves almost no issues in comparison.
Perhaps you just shouldn't think a game is bad simply because it runs in your browser. :)