Hercules vs z/PDT - some observations

I received some time ago results from a handful of s370_perf runs done on a z/PDT V1.7 system. Took some time to analyze, the data and full analysis is now under

Performance testing of z/PDT is explicitly disallowed in the z/PDT license conditions. s370_perf would be not the proper tool any way. The page cited above merely gives some observations on general features of z/PDT, the key ones are repeated here

For any further background and detail follow the links.
Any remarks and comments are very welcome.

2018-12-27: MVCIN, CLCL and TRT performance significantly improved in Hercules Release V4.1, see this short note.
For original posting to Yahoo! Group - Hercules-390 see topic 83576.