An AV that has highest detection rate is NOT always the best one. The best AV is the one that you found to be easy to use, and you likes it. This is why many people are using Defender even though researches show that it is weaker than leading AV likes Kaspersky, because it is included in the OS, free to use and no annoying ads.
Weston1973, Just checked the topics that you started, it looks like you're a spammer trying to make everyone think that Malwarebytes is not a legal company. Everyone has own opinion regarding which AV is the best. I run Windows Defender and MB 3.0 Pro for years without any issues.