Now that we're speaking in terms of cylinder pressure, a fair comparison can be made. stock for stock 1jz can handle the same cylinder pressure the 2jz can without grenading. Given its larger displacement, better cams, etc. the 2jz makes more power at the same cylinder pressure. The only real benefit of the 1jz over the 2jz is the price.
given the thread is titled "Stock motors that can handle a lot of boost." and not "HP per hole", the statements made about the 2jzgte can be applied to the 1jzgte as well, given that both motors in question are non vvti motors. vvti jz motors aren't as durable.
As far as your statements about the 4g63t, they're all correct as far as I'm concerned, as long as the statements are only referring to a 6 bolt.