Oh, I am thinking how ANY power that has a ToHit component has a 5% chance of failing (or a 5% chance of hitting?), no matter how high your accuracy and how low the target's defense, is that right? I know for a fact that there has been plenty of times where I should have never missed and I still whiffed.
Personally, while frustrating, I actually like both aspects of this hit/miss, including the StreakBreaker, as it gives a lowbie a chance to still hit his/her target. Sadly, if you are that low on the acc table, the damage you do is probably guaranteed to be lame sauce. Still, who didn't feel EPIC hitting a purple AV even if you did 5 dmg
See, it is stuff like this that made CoX sooo much better than any other game, they really put a lot of effort into the game mechanics.