I look at it this way: What the manufacturers are doing is giving us more options by manipulating how the sensors perform at various ISOs and at various readout speeds. All the while being balanced by price points.
Sensors reached peak DR a while ago. But now, instead of choosing from a bunch of bodies that all have peak DR at base ISO, we have choices where we give up some peak DR but gain additional DR in the ISO 400+ range. It's this last point that gets interesting to me. For example, the a7RV has about a 2/3 stop advantage at base ISO over the S1RII. Interestingly, the S1RII has about a 1/2 stop advantage at ISO 3200. Hmmm.
However, if you look at the
PDR Shadow Improvement chart, it gets even more interesting. The S1RII picks up another 1.25 stops of PDR at ISO 3200, so a net difference of 1.75 stops of PDR over the Sony at that ISO (at least, in the shadows). That's a significant difference when your "normal" PDR is hovering in the 7.5 ish range, as it does at ISO 3200.
So you just have to look at the data (and the raw files!) and decide what's right for you. The advantage of some of these newer sensors (beyond speed) is that for things like wildlife - where you are often photographing in reducing lighting situations and therefore at elevated ISOs - and for video, where you are sometimes forced into elevated ISOs anyway - the increase in PDR (or at least: shadow recovery) at elevated ISOs while giving up a comparatively small amount of PDR at base ISO can make a lot of sense.
Of course, if your main objective is landscape, then you will be primarily concerned with base ISO. And there is no question that the Sony 60 MP sensor is the best FF sensor on the market right now for landscape - due to it's PDR and it's resolution.
As for a PDR of 11.08 vs. 11.63 (S1RII vs a7RV, respectively) I was somewhat concerned about that, as I am primarily a landscape shooter. So, I download a ton of raws from the DPR test tool, and did things like boost them 6 stops from a near-black exposure to see if I could find an obvious difference. While I could see a difference, I found it to be quite small (i.e., zoom in 300%, etc). I'm not saying this is a perfect test - and I'm sure that something like raw digger would prove that there is a little more information in the deep shadows of the Sony files - but I came to the conclusion that 11.08 vs 11.63 PDR just isn't important to me, given that even in the most demanding high DR scene I rarely have to boost shadows more than 3 stops anyway (at least, at base ISO). So I decided to look at other factors in making my decision.