AIR performance on Android emulator vs. actuald Android tablet device?

I have been able to port my BlackBerry tablet applications to Android Emulator.  The performance seems really poor in terms of graphics and audio play.  The audio play is a litte chunky and the graphics appear to hesitate slightly.  Is this a "feature" of the emulator and the actual devices are a lot better or does the emulator reflect that of the actual device for AIR applications?

I've tried adding

<renderMode>gpu</renderMode>

But it does not seem to make a difference.