Many things have changed in malware seen.
1. Viruses and Worms no longer target home users, only corporations, government and business systems. It is actually very rare for a home user to get a virus or worm infection.
Many Anti-virus vendors mislabel malware, giving them the title of virus, worm or trojan when they are actually rogueware. Of coarse there are still viruses and worms in the wild, but most AV are very effective at blocking them. Some times it is hard to tell what type of malware infection you have when all of the vendors give the exact same malware a different label. If you do your own research, most malware now days labeled as viruses and Trojans are actually rogueware.
2. About 85% or more malware infections on home user systems are rogue security products, ransomware, scareware and other rogueware. These infections have to be manually downloaded and installed by the users, they use trickery to make the users think that they are downloading and installing something that they need. Rogueware doesn't automatically install or find vulnerabilities in the OS or web applications, it is totally the users actions that allows them to function. Rogueware are notorious for getting past most AV's detection.
3. Adware and spyware are no longer automatically installed through vulnerabilities in web browsers. They are bundled with many free programs and usually only optional, users can usually opt out. Most have a privacy policy that is attached to the installer. Once again the user is at fault for installing adware and spyware, many security vendors have removed detections of adware and spyware since they are no longer forced upon the users. Other adware and spyware that don't follow the guidelines are easily blocked by most AV's.
4. Trojans and rootkits are not much a threat for home users either, but are still more common than viruses and worms. However most respectful AV's usually can block them. Trojans and rootkits are commonly bundled in illegal cracks and keygens for activating paid products. Just watching what you download can keep you from getting an infection.
So if they was a malware testing site that only used samples that infect home users, then Malwarebytes Anti-Malware would have the highest detection rate since it has the best detection of rogueware and rogueware slips by most respectful AV's.
For malicious malware that causes severe damage to a system like viruses, they are very rare for home users systems. The samples are available but not widespread, usually only used in testing not distributing. I'm sure if you check out Youtube for malware testing, you can watch a lot of videos about these malicious malware. Some have been out for many years but still no reports of home users getting infected except for those users testing the samples and getting an accidental infection.
Of coarse some types of malware are regional like Asia for example the viruses are more common for that area.
Like I said I have about 300 or more customers that come into my shop weekly that have malware infections, I haven't seen a real virus infection since 2005. These customer mostly just use a free AV and Windows default firewall.
This observation is in the central USA based up on my customers, other places may have different results. I'm still waiting for that customer to come in with a real virus infection that will give me some kind of challenge. I'm tired of GreenAV, Windows7Defender, My Security Shield, System Guard 2010, etc.
Good day.