Likely a difference in realities.

[He could have said planets. If these wars span galaxies, it wouldn't be unreasonable, but simply based on his own experiences...

He pauses for a moment to watch Roger work, but makes no effort to resist. So far, so good, even with the uncomfortable subject matter.]

I have met individuals from different points in time and entirely different worlds, even in cases where we came from the planet Earth. Details didn't match up. Aspects of one set of experiences contradicted the other.