Is mATX better than ATX?

Is the mATX form factor inherently superior to the ATX form factor in terms of performance, efficiency, or other key metrics? Are there specific use cases where mATX excels over ATX, or is the choice primarily based on personal preference and space constraints? As a cryptocurrency and finance professional, I'm curious to understand the technical nuances and potential implications of selecting one form factor over the other, particularly in the context of high-performance computing and data storage needs.