I can't figure out where he's going.
I agree that the Prosecution is overplaying its hand. I think they feel a need to make things appear bigger than they are to compensate for the holes, rapid elimination of other suspects, etc. I think it also fairly transparent.
As I said.....I wouldn't appreciate any games if I were a juror. This defendant is on trial for his life. Don't attempt to include everything but the kitchen sink. Either show me the valid, potentially guilty elements or risk my looking at your entire presentation with a jaundiced eye.
A scratch or small cut does not bleed a whole lot. I'm guessing that it takes more than a drop from the victim to get on the perp???????