I don't think you can ever expect the same level of quality and performance that you get with a native program that gets specifically compiled for a certain platform, and sometimes written specifically for it. With WebGL it is just JS, and with GooCreate you can make really cool scenes that can include interactivity (with state machine and no coding or with custom scripts) and then just press publish and have it available for millions of people... no need to compile for several minutes for each different platform and no need for huge downloads.