I think the expectations for a "G7 Nation" are subconsciously distorted by the US skewing the "average."
France is planning 200 tanks to the XLR standard (~ 175% our population, 150% our GDP)
UK ~200 Challengers (similar ratio to France)
Italy is only upgrading 125 Ariete's (150% of our population, comparable GDP)
2 regiments + spares and training (~120-150 combat grade tanks) is a reasonable expectation from both sides of the coin, neither too high nor too low- providing there's roughly equivalent numbers of cavalry fighting vehicle, a tracked heavy IFV, proper amount of SPG's, mortars, ATGM's etc. etc.