I was not talking about that, obviously you're right in that sense, but the pressure to perform in a fight and in a performance with other musicians IS similar. If one blows it, the injury to pride is also similar. The physical results are different, yes.
All performers face this. You can easily find examples of ballet dancers and musicians who vomit before many performances, even top level ones. This is exactly the same, no different, from what a fighter faces pre-fight.
I'm not saying there isn't, but the difference is in degree(unless we're talking people who spar each other a lot and are not going heavy).
My comment was regarding the pressure to perform, and it's the same for all fields, especially those at the top.
I forgot to quote LKFMDC. I was not discussing forms, as far as I'm concerned, forms aren't something to display and perform, but personal notes on a style. I was discusing the pressure to do well. Are you claiming that you feel more pressure to perform well in what has meaning for you than, say, Marvin Gaye did? I don't think you are suggesting that.
Yes being hit sucks, but when you've entered a fight, are you really completely accepting of the idea that you might get utterly crushed? Hopefully not, which means that does not add to the pressure to change it completely from the same feeling that a musician playing with other quality musicians live has regarding blowing it.
Fear responses DO NOT necessarily get linked rationally, so adding the possibility of getting hit does not mean that the fear is that different than someone else faces from things that don't relate to actual possibility of harm.
If you haven't barfed from pre-fight fear, then you may not be feeling the same pressure a ballerina who does barf has before that performance, irrespective of getting hit.
99% of fighters who, in losing, are not risking losing their career, may face the stress of the potential of getting hit, but do not face the stress professional performers face of losing their entire careers for one bad performance, and humans DO display, FULL ON, survival mechanisms regarding things that DON'T threaten their bodily health one bit.
/digression