Received accuracy and target size practically the same thing and can be factor in easily.
Optimum range is not the range a unit but the range it trades better.
If grenadier vs conscript trade slightly better the closer the get, there will be very little reason for either unit to reposition. Grenadier will lose more during the move while cons will be able to simply ourah away.
There's a lot of things that you assume or suppose wrongly, which usually would get right by experience from playing the game. For instance, nobody moves grens closer at all! And nobody uses Oorah to move away from grens during combat, since grens get the upper hand at distance against cons. Furthermore, you neglect the DPS discrepancies of oorah on cons.