If the matches are reported with the above match slip you could produce data similar to sports statistics. Imagine being able to produce stats like Whisper lives the entire match 60% of the time and of that 60% that squad wins 95% of the time. In matches where Whisper dies they lose 78% of the time. By only collecting the scores and that squad played this squad, you'll be missing some of the details.
Interesting idea for the match slips, it's on my wishlist. Unfortunately if you are having anyone calculate MoV than you're doing it wrong. You should be entering kill points into my program and it calculates MoV for you. The only thing the TO has to remember is that if you completely destroy a squad that only has 98 points then you still get credit for 100 kill points.
If you had the match slips check-box method, then MoV would definitely be getting calculated automatically. This would be a really good thing. You would, of course, need a failsafe to be able to enter data in manually, even allowing for the possibility that you don't even have the squad lists, just the MoV itself.