It's always been this way ... designers make different decisions on some issues. MP vary widely between titles of the Napoleonic series. Cavalry is worth twice the number of VP in HPS Gettysburg as in other titles. I believe in the BG games it took one-half of the movement allowance to limber/unlimber artillery--that would be 6 MP in most cases.
The games play much differently depending on which optional rules you use. Check "partial retreats" off for instance and your entire tactics has to change to accomodate for that, at least when large regiments are involved. You play differently with our without rout limiting. And of course, there are worlds between the style of play required by a trans-Miss title like Ozark and a seabord title like Gettysburg.
In short, study the differences and learn to live with them. Keeps you mind flexible ... doesn't it?
Gen. Walter, USA
<i>The Blue Blitz</i>
3/2/VIII AoS
West Point Class of '01
[url="http://www.home.datacomm.ch/dierk.walter/2VIIIAoS/persrecord.htm"]

[/url]
"... and keep moving on."