Purpose of "rolling to miss" rule

[RobW]

Just noticed that we've been playing wrong for years on rolling to miss. We've treated allies and enemies very differently, if you roll to miss an enemy and fail, that's it, the attack is over.

RAW say that's the case for rolling to miss enemies, unless you roll 14 or over, and then an accelerated damage sequence is used (14=hit; 15=2x damage; 16=3x damage). We used the accelerated sequence on allies but not enemies.

Now, the RAW clearly state that they are trying to avoid making 'roll to miss' a tactic for hitting an enemy, but using this accelerated damage sequence means the opposite. Am I missing something?