This has been bugging me for a while and may turn out to be a silly question (if there is such a thing) but.............. Why is the use of Saunas advocated over stream rooms for weight cutting?

I have done some research but not really found anything significant.
A steam room is cooler but still makes you sweat, some indicate faster.
I find the conditions of the steam room much easier to deal with (ok when cutting weight this isn’t of greatest concern) and for the short/healthly stint feel far better than when using a sauna.

My thinking is that a sauna continues to make you sweat somewhat more than a steam after your body doesn’t want to?
or is it just a case of always done, always do?

I thought i’d throw it out to the good and intelligent people of Ax.
Thanks

P.