I guess my question is: why bother with a benchmark if the pick is pre-ordained? Is it the case that at some point the results would be so lopsided that you would pick the faster solution? If so, what is that threshold? I.e. when does performance trump system simplicity? To me those are the interesting questions.

>why bother with a benchmark if the pick is pre-ordained

Validating assumptions

Curiosity/learning

Enraging a bunch of HN readers who were apparently born with deep knowledge of PG and Redis tuning