You missed the point completely. Please read my post again.
In case you still don't get it, the summary is that Massa got injured right above his eye. You said that you noticed he could not lift the eyebrow. The muscle that lifts the eyebrow extends quite far away from the area Massa got injured. The branches of the nerve that supply this muscle lie even further away.
For the whole muscle to get paralyzed you would need most of these branches severed.
You would get the same effect by severing the muscle itself, or its attachment, which lies exactly in the area where Massa got injured. Thus, I think the second scenario seems more likely.
Yes, a deep cut could reach the nerves, but then again the muscle itself would be severed first.
No, there aren't "many" facial nerves, just two, left and right, and what you listed there are the branches they provide.
Here's another artistic impression:
http://radiopaedia.org/uploads/images/0 ... anches.jpg
The transparency you might notice is there to show that the nerves actually lie deeper than the muscles. Nature is wise.
The most merciful thing in the world, I think, is the inability of the human mind to correlate all its contents. H.P.Lovecraft