Sorry, I'm late here...
I don't have enough rights to display the work I used for my personal tests, but basically the difference between before / after came through a lot of attempt to calibrate the parameters contained in the "Expert Settings".
More specifically, after configuring the "detection (feed-forward <-> feed-back)" with several possible combinations of the "dual-band clip stage", I managed to arrive at a result very similar and close to the iZotope Ozone limiters - mine favorites.
We know that limiters react very differently and are very dependent on the program that passes through them, so, aware of this, I set out to run tests just to prove to myself how badly I was being strictly wrong with AM-Munition . For the specific material on which I dedicated myself to do the tests, I was able to witness the potential of this plugin, but I cannot guarantee that this behavior would be repeated with any other material.
Still, there is a difference regarding the "low-end" that Ozone delivers that I was not able to fully replicate in AM-Munition. Ozone delivers more weight.
iZotope Ozone (Maximizer / Vintage Limiter) has its own signature sound, which I like very much. AM-Munition has a very different infrastructure but, because it is very rich in the possibility of configuration, it has the capacity to offer desired results.
My focus was to put AM-Munition against Ozone Maximizer (IRC IV - Modern) and Vintage Limiter (Tube). The latter (Tube) gave me the most trouble, mainly because I was putting a technology based on optical compressors against tube (feed-back) compressors. Sliding the aforementioned AM-Munition parameters to the right cautiously and judiciously, left me in a situation where there were moments during comparisons when I hardly knew how to distinguish one plugin from another.
Ozone, however - as already said - delivered more weight and that was a determining differential for me and for those who helped me choose the way forward. But the decision was based on that particular work (heavy metal album), which certainly would not exclude the possibility of a different decision regarding another work material, even if it has the same musical genre. Choosing a limiter is very personal, surgical and occasional decision, in my humble opinion.
Therefore, contrary to the mistaken sense that the title of this topic wanted to use, AM-Munition can sound as open ("cold") as it is closed ("warm"): it only depends on the skill of those who are able to master it.