I'd assume exactly the reason you mentioned. It threw me off a bit at first, partially because the postgame stats are bare (going back to your point about UI). I'd prefer the score to be a basic point-per-kill score, but then again a Kratos who goes 10-15 doesn't deserve to win more than one that goes 10-5, so I guess it's actually better thought out than I initially thought.
Guys its a demo your seeing stop complaining about every thing ever thread is something bad
It's called FEEDBACK. They read these forums you know. They might be going for these menus. How do we know?