OxiClean claims on its website that the "bubbling" that goes on when its sodium percarbonate interacts with water (to release oxygen) serves to "lift the stain" away from the underlying fabric. I strongly suspect that's just hype. The mechanical action of bubbling is meager compared to the mechanical action of your machine's tumbling drum, so I don't know what a little bubbling is going to accomplish. The only reason that bubbling is important is because it's the outcome of the chemical reaction that releases the oxygen
If the bubble forms between the stain forming compound and the fabric fibres then the mechanical force is far greater (and in a more advantageous direction) than the tumbling action of the drum.
Whether that actually happens with any of these products I just can't say, I have no evidence
I have had a thought though - ultrasonic?