The problem with Multi Player vs Single Player thing is that there's no real deterministic measurement of "good"ness. You just have to be better than other people.
Now, I'm not saying that Multi Player isn't more impressive, but an absolutely perfect run of a SP game makes you literally the best as possible as opposed to MP where meta games are ever changing and such, to where I don't think you can be "perfect" in mp.
Just my thoughts.
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