The draft is over, so I'm not going to get mired in the pre-draft pseudo analysis. I don't know if you have seen the raw data from PFF that indicates Stroud has issues with pressure (more than other QBs in this class). I have not. I have read analysis from ESPN that Stroud's QBR under pressure was the highest of all the top QBs in the draft, and 3rd in QBR when blitzed (slightly behind Young and Hooker). This so called curse is highly debatable. Regarding the S2 test, I would think someone like yourself would not put that much faith in a study with such a small sample size.
I always use my eyes. If the numbers match what I see, then they are validated. When I see Stroud (or Bryce Young), I see a QB. When I see guys like Richardson and Levis, I see guys who are pretending to be QBs because someone thinks they should play QB. I know where to put my chips.