Unfalsifiable
Though Ves felt uncomfortable, he defended himself as best as possible against Master Willix's inquiries.
He had known from early on that the emergence of expert candidates within the Larkinson Clan would definitely attract attention.
Yet even if the mech pilots under his charge possessed a higher chance of advancement than others, this was not unusual.
Plenty of other groups and organizations that nurtured mech pilots in-house managed to surpass the average.
Just looking at the average rate of advancement to expert candidates in civilized space was not very useful. The individual rate between states, organizations and even mech regiments differed a lot, so much so that a mech pilot in one place was a hundred times likelier to advance than if he went to another place!
Ves put forth two simple arguments to explain why expert candidates seem to pop up like mushrooms under his command.