IF you care to read the article, they indeed do not blame the architecture but the available silicon implementations.
I did read it. A Banana Pi is not the fastest developer platform. The title is misleading.
BTW, it's quite impressive how the s390x is so fast per core compared to the others. I mean, of course it's fast - we all knew that.
And don't let IBM legal see this can be considered a published benchmark, because they are very shy about s390x performance numbers.
But they didn't reflect that in a title like "current RISC-V silicon Is Sloooow" ...
Then how do you justify the title?
I keep checking in on Tenstorrent every few months thinking Keller is going to rock our world... losing hope.
At this point the most likely place for truly competitive RISC-V to appear is China.