That is a very strange statement to say the least. Or probably two strange statements.
For one, VG-10 has Vanadium in it, while neither ATS-34 nor AUS-8 have it. I'll skip the whole Vanadium carbide thing here, there's more than enough info about that on this forum as well.
Even though both are Japanese steels, I see VG-10 in premium Japanese kitchen knives, never seen ATS-34 in them so far.
Tojoro knives VG-10 is 62HRC, and you want to tell us that it's gonna be the same as AUS-8 in CS knives or in any other knife?
If I didn't have several CS AUS-8 folders in the past and a few Tojiros may be I'd believe that. For that matter, Fallkniven VG-10 White Whale, which I've used for around 4-5 years, was around 59HRC, that outperformed AUS-8 from CS quite considerably, despite the fact that it was sharpened to ~30 deg. angle included, while the CS AUS-8 knives were around 40-45, to have acceptable edge holding.