only 26 rocks from Mars
They say a Martian rock hits here every month but then they say they have found only 26 rocks from Mars. I see no evidence then that these rocks are common or of they are that this can ever be proved. This is a simulation that contradicts the last simulation, who knows what the next one will say. Maybe it mean that all of these are by nature too small to be found but nonetheless there is no physical evidence that much Martian material is getting here.
I'm also a little skeptical that forces this great wouldn't obliterate signs of life, that's a strong acceleration and shock wave. You might end up with organic molecules only.