After a month using AmiBroker on Wine and Parallels, I can confirm that using it in Wine is pretty comfortable but the speed is clearly different. Maybe the test is not as realistic because in Wine I've installed the x86 version while on Parallels I have the 64 bit one. Same on a real PC where I have the 64 bit version installed. In any case, you can judge the results by yourself, but it's clear that Parallels running on the Mac M1 Pro beats both Wine on the same machine and a real -inexpensive- PC.
Take a look at the results of a quick individual back-test of 2000 symbols over 2 years of data
My conclusion is that for quick tests, Wine is good enough, but if you are going to get serious it's better to run AmiBroker in Parallels, which works incredibly well.