Then TSB is simply Matter Destruction that works up to molecular level, I don't see anything that suggest that it has null element. Perhaps "Limited Power Null" for TSB would, but not outright Power null. It also doesn't have regen negation element too since it's never been used against someone with High-level Regen, TSB at best, can bypass Mid-High regen.
Also, have you all forgot that Higher enough AP can atomzied the lower tier? I don't see why a 3-A energy attack can't atomized TSB on contact. Heck, Anti-Spiral can break down matter down to Quantum level with energy attack, re you suggesting that TSB null that? Of course not, far superior AP and matter destruction can actually destroy TSB due how the jutsu works.