Modern day IQ analysts compare some unsually smart young kids with Einstein and others. Often, we fail to realize that IQs have evolved too.
Contrary to the times of Einstein, Tesla, and Newton, the geniuses of today are more of innovators than inventors.
So, it is valid an argument that our ancestral geniuses may have even greater IQs than the modern geniuses does. To see this in a better light, you might want to take out the screen magnifying our current world; the media hypes.