The test results you have selected are very old and may not represent the current state of Wine.
Selected Test Results (selected in 'Test Results' table below)
Everything important works.
What does not
24/7 operation is not possible, with just 5 files downloading memory consumption rate is around 1MB/minute and none of the settings have any effect, it is impossible to run it as it should be, eventually the system will run out of memory, and has to be terminated in order to prevent a system-wide out of memory.
What was not tested
long-term bugs and operation due to memory problems
overall, great support, low cpu usage (1:1 with windows), some GUI lag but nothing of concern. if properly configured, you have no need to look into running on windows ever again.