That was my point. It's 100% base chance to hit before factoring in enemy Defense chance. You only need enough accuracy to offset the target's defense in order to hit with every special attack you make. Anything beyond the 5-8% (I've heard/read numbers that vary) needed to offset that Defense chance only serves to reduce the chance of missing with your basic attack (which is almost completely negligible improvement in DPS, no matter the class).
If that were true I would never miss with my Master Strike, Dispatch, Throw, Leap or Overhead Slash. I have seen all of those miss on multiple occasions.
Here is my parse of last nights TFB HM run. http://swtor.askmrrobot.com/combatlo...ayer/1#d=0,b=1
Please note the misses on the above abilities.