I always suspected vibrating the sensor about didn't do anything of note. This proves it to me all the more. Even the Olympus anti-dust feature looks pretty pointless. It's all or nothing to me, you see. Even if 80% of dust is removed it's still not much good, you've got to clean it to near 100%.
Admittedly, though, they dusted those sensors to the extreme. I mean, it looks like they left the camera open in a sawmill or tipped a bag of flour inside. In reality a few spots here and there is what you get.