PCMark Vantage is based on the hard drive usage of actual applications, albeit applications from the Windows Vista era. Futuremark uses so-called traces, which are recordings of disk activity of real programmes, and repeats the same activity as quickly as possible in the benchmark. Because traces aren't played back in real time but as fast as possible, performance differences are amplified in PCMark Vantage.
The scores vary a lot. The Samsung 840 Pro 256 GB takes first place again with 81,258 points, and again the OCZ Vector 256 GB isn't far off with 80,740 points. The top 5 consists of the Corsair Neutron GTX 240GB (75,086), the Samsung 840 250GB (74,699) and the Corsair Neutron 240GB (74,431). Among the 128GB SSDs, of which we haven't tested as many, the Samsung 840 Pro is also the fastest, followed by the Plextor M5 Pro and many SSDs that perform roughly the same.
A few models score poorly, again the Crucial v4s but also the Everest 2-based OCZ Vertex 4s and Agility 4 256 GB perform poorly in PCMark Vantage.