Can you unpack that a little?
When you look at the available research on ais in men you can see this.
There is an arimidex study in men where they found .5mg Ed and 1mg Ed gave about a 50% suppression to e2. So this is where the 1mg Ed dose for studies has come from. I'm not gonna look up the study ATM but with some Google skills you will find it.
Next there is a study on men given androgel and arimidex at 1mg per day or no arimidex at all. The test doses were graded into different groups. All groups showed next to no e2 on the androgel with arimidex, yet the study in healthy mean showed far less suppression.
So there is a feedback loop where when a man off cycle suppresses estrogen he will make more testosterone and thus reverse some of the suppressing effects. On cycle you are not able to make more testosterone to compensate so the suppression is shown to be greater most likely due to this.
You can find both studies if you look around and read them yourself and make your own conclusions.