With these buses, you are measuring *cache* speed, and not continuous main storage speed.
The problem is this. On a server, where such factors *may* help performance, not writing data to backing storage most of the time is probably better- in other words things like giant RAM disks. Many of the methods speeding up HDD or SSD storage are really RAM tricks.
For a regular PC user, this means the extreme cache benchmarks make no improvement to things like game load times. Because the cache is never used.
Windows often writes files to RAM - which is insanely quick- when lazy writes are active. In the background this RAM version writes to the DRAM cache of the SSD which writes to the SLC cache of the SSD which writes to the true multi-bit cell.
If one writes database low level code for Linux, to explicity take advantage of new SSD speeds, one can see very large improvements to certain common tasks. General Windows code will not see the same improvements. Which means for PC use, a good brand of SSD sitting on a SATA lead will usually be the best buy. Outside of laptops, NVMe usually takes too many resources from the MB chipset to be worth using.
Dribblers into high end gaming tend to be the least tech aware, and believe the bigger the number, the higher the cost, the better the part. They are hardware 'whales' and their idiocy at least helps fund the industry- so it does some good.
On consoles, with flash used correctly in Computer Science terms (which is almost never the case with SSD and Windows), insane gains can be obtained. Flash in the new PS5 and Xbox Next will give both systems real and apparent advantages over the PC, even if the PC has a pointless SSD like the one in the OP.
PS Windows once planned to use flash correctly as a general cache between the RAM and the HDD- and to add functions to exploit this memory system. Partly thanks to Intel's incompetence, this never took off, tho companies like AMD sell software solutions that add this ability to your SSD device. In general these software solutions are more trouble than they are worth - but when they do work they can give big gains.