Not really. Pick a random skull out of the 7 billion humans that exist today. How likely are you to get a Peter Dinklage or a Shaq?
Also, pretty sure archaeologists aren't dumb. The idea that this might be an outlier specimen probably occurred to them? They're obviously synthesizing a lot more information than just this one skull.
I for example have an enormous head, bigger than a size 10 hat. I also have that weird protruding ridge on the back.
In 10k years is someone going to think I'm a different species?