Extremely uncommon. There are usually somewhere between 3 to 10 engines that will give a generic detection to pretty much any piece of malware. That is not to say that they are the ones you want to use though.
BitDefender is almost never on that list . ESET is probably the most consistent in this regard of the major AV suites that you would run.
Remember too that VirusTotal runs custom Linux versions of static standalone scanners. It doesn't test behavior blockers at all and might not even test all the engines. It certainly doesn't test any behavior blocker capabilities.
Thanks for this, good to know, I always upload to VT before I install software ( which is either legit or open source anyhow ) so good to hear it does its job quite well.
so ESET is one of the top engines, always comparing like for like/how the VT deployment works -not referring to the general case-. Which are the other 2?