Board Thread:Wiki discussions and announcements/@comment-3308937-20140417171343/@comment-3974211-20140418025636

I personally think that we should remain inconsistent. Attack speed is an exception.


 * It is not feasible to use level 1 for everything because X + (Y * level) is logical maths. I suppose we could do X + (Y per level-up), to distinguish that gains are only on level-up.
 * It is also not feasible to use level 0 for attack speed because the number given is meaningless. Ashe gains 4% bonus attack speed per level; 4% of 0.658. Theoretically, 0.6318 is her attack speed at level 0 - her bonus attack speed remains 4% of 0.658. 0.658 is the number that users need. Level 0 for all the other stats is meaningful because 12 + (3 * level) remains accurate - although as stated above, you could theoretically do 15 + (3 per level-up).

And you can't just change Ashe's attack speed to 0.6318 (+4.0056%), which is accurate factoring only her innate attack speed to 2DP: it doesn't hold-up when it comes to purchasing items. A Phantom Dancer would remain 50% of 0.658.