The formulas I'm using were taken straight from Awakening itself. However I did notice that I did something slightly wrong on my calculator sheet. Can you send viewing privileges on your sheet to anyone with link and then put the link here, so I can see your sheet?

Attack Speed is your character's ability to "out-run" your opponent in combat. If your Attk Spd is greater than the opponent's by 5 or more then you get a 2nd attack during battle.

Yes, everything is round down to nearest whole number.