"As you can see, Seasonic decided to offer up to 850W Titanium units; that decision might seem strange considering that Super Flower has a 1.6 kW Titanium unit in its portfolio."
Only if you've bought into the ridiculous idea that only (increasingly rare) tri and quad GPU setups need or want high efficiency PSUs. Or, of course, the even dumber idea of buying ridiculously overpowered PSUs. That fanless 600W unit could probably run dual GTX 1080s in SLI with a <100W CPU, although it'd be getting close to max output when GPU power spikes (Tom's' own testing showed stock clocked 1080s averaging 173W under gaming loads, but spiking to ~300W). After all, what's the point of Titanium with its improved 10% load efficiency if that 10% is way beyond the idle power of your PC? Building a modern PC exceeding 1000W at non-power virus loads is really, really difficult.
PC components are making huge strides in efficiency. It's time the PSU industry got it's foot out of its a** and keep up. Lian-li's new SFX-L PSUs seem like a good evolution - smaller PSUs with decent efficiency and low noise are a must for modern form factors. Proliferation of low output, high efficiency PSUs are a huge step in the right direction too.
For me, the star of this line-up is the 450W Focus Platinum unit. From what I've seen, it's the first platinum efficiency unit offered at that low power - perfect for a high-end mainstream setup with a single GTX 1070 or 1080 (and probably Vega too), not to mention mainstream setups with R9 480s or GTX 1060s.