Hmmm... I will have to look a few things up to check the accuracy of what I think.
Firstly about anger and its role: How I understand it is that all anger has a similar role. Yes the extent and quality of it can be extremely different but all anger is a response that is supposed to initiate defence. That could be the defence of the heritage building, the defence of ones parking space that someone just took or the defence of ones life. Or it can of course be displaced anger that isn't about anything in the present at all and is either about the past or a response to the persons own internal baggage or distortions.
I also think that when it comes to defence there are many different types of responses that may happen and a lot of what determines which is used relates to habit, personality and the situation.
Its a bit off topic really but to demonstrate the general concept here is a link to Pete Walker 's Four F's:
http://www.pete-walker.com/fourFs_TraumaTypologyComplexPTSD.htm
When it comes to what is more tolerable or not I think a lot of it probably comes down to personality type, history and triggers/vulnerabilities.
On a personal level I have had a total intolerance to anger. Initially I did not think I experienced it. Now I realise that I just internalised it, dissociated it away or acted it out in self harming behaviour. The feeling feels vaguely familiar. I too have experienced rage where I want to get out of my skin. I absolutely hate it.
I have had to do a lot of work to tolerate anger and use it more effectively. Both mine and others.
Faced by others anger in the past I would totally disintegrate. Same with my own. Now I use it as a reason to stop and think what I feel threatened about. Is it a real threat. Is it about something unrelated. Is it because some aspect of me is feeling under attack and why. It has helped me immeasurable with boundary setting. Dialectical behaviour therapy (DBT) skills helped lot with all of that.
I hate anxiety too and find it totally and utterly overwhelming but it doesn't frighten me like anger does.
On the topic of anger and power: I have read up how it sometimes becomes addictive as a response and therefore becomes the go-to reaction for someone.
My sister is like this and I have actually had an honest conversation with her about it after she had many years of therapy and had more insight. And she said very much what I had read. The rage gets an instant response. It feels powerful. That aspect of it is addictive. I think it is also followed by shame after for many.
So although I think people experience different emotions at different intensities I also think our interpretation or tolerance of that emotion also plays a big role. Feeling anxious may be interpreted as weakness and rage as strength or not.