You are not showing everything. For instance, you are not showing us a 90% commander with battle count. Then, you are not showing the almost 30,000 exp it takes to get a crewman from 90 to 98%, with battle counts shown.
Don't even bother.
His saving was a x2 + 3 times crew training.
I retrained my StEmil for rhm and took 15ish using x3 + 200% pr.