After using the B2,B1 "reset", TKP and TKS will cause the opponent to react in the same way.
There will be no wake up attack / tech roll because the opponent is not grounded and depending on which special you use, Ermac will either be at -17 or -26 if blocked.
The reset is a cool idea but far to risky Imho.
This could be successful against the average player but I don't think anyone would risk it against a solid opponent who can punish you heavily..........we're talking +50% depending on the character, and you can ultimately end up cornered.
The only logical solution to shut down an opponents tech roll / wake up and maintain advantage is to end a combo with F4. Depending on the combo, Ermac will still hit +40% damage and you will be at +13. No gimmicks, just smart, strategic play.