Well, I have to say I stick with Defender and here's why.
Some big omissions from all these tests are,
1/ 3rd party (as opposed to Windows Defender) security suites can often cause havoc when some compatibility issue arises (such as a Windows update etc). Think how often this is found to be a problem with "xyz security product" when suddenly files disappear and/or the system is rendered useless. Everyone is playing catch up and the cause of the problems were... the security product.
2/ Once you install a 3rd party software suite, how do you remove it fully ? Use the manufacturers removal tools (if they have one). Do it manually. Are you sure its all gone and that leftovers will not conflict with whatever you install next ?
No security software can be perfect but I've never been let down by either MSE or Defender.