The question could reformulated: “what is more easy: panspermia or abiogenesis?” If we look at Earth, we could see that “panspermia” between different parts of the Earth worked better than abiogenesis. We have only one type of life here.
The answer could come from Mars: if we find life there, and it is of different origin than one on Earth, than abiogenesis is easier. If there will be ours type of life, it will be evidence for easier panspermia.
The question could reformulated: “what is more easy: panspermia or abiogenesis?” If we look at Earth, we could see that “panspermia” between different parts of the Earth worked better than abiogenesis. We have only one type of life here.
The answer could come from Mars: if we find life there, and it is of different origin than one on Earth, than abiogenesis is easier. If there will be ours type of life, it will be evidence for easier panspermia.