Yes it does when you have true experts. I have heard and read so much conflicting testimony, I am not sure what to believe about so-called arterial spurts, etc. I thought there was some debate on the blood spatter and what it meant. [See Michael Peterson trial "blood experts," e.g.]
I know the heart can keep beating after brain death, but seeing Reeva's head wound, I find it impossible to believe she was alive for the amount of time it took OP to go to the balcony, scream for help, put on his prosthetic legs, go back to the bathroom, beat in the toilet door, reach in to get the key, open the door with the key, check Reeva, sit with Reeva, pick her up, and walk through the bedroom door to the stairs, then carry her downstairs.