Annular boosters on a Tunnel Ram

Dumb ***. I’ll say it again. A bigger MAB starts the mains sooner.

If you understood what happens when you go from a down leg booster to an annular booster then you‘d understand what I said.

Since you already admitted you don’t work on Holley carbs (and it’s clear you know nothing of them) you should check out and keep quiet.
My understanding is, the annular booster is bigger and add a restriction. That in itself could cause it to go rich. Also, This is getting into why you've always said peak air flow doesn't always mean peak power. It's how the air and fuel are mixed. A better mixture can make more power at lower overall air flow numbers. ........and you didn't think I was payin attention.