Thanks for your honesty. While we'd prefer people play constantly, that wasn't really a reality for the test given it had the same subject matter as previous tests. You used Manaphy 29-of-47 battles, and faced it 32-of-47 battles. All in all, your Manaphy SEXP was 55th out of 933 accounts, which is pretty much exactly in line with your total SEXP (54th of 933).
WacanGlow Manaphy was used only about a quarter of the time. While it was probably more popular in the later stages of the test than earlier, I wouldn't blame yourself for not having run into it. I would guess that a lot of people played more during the earlier stages of the test, due to the same "boredom" I referenced before, so again, your experience is similar to or better than that of the other testers. And I would argue that while it may have taken a while for WacanGlow to popularize, that may have been a natural phenomenon of the test. And maybe it wasn't as powerful as you think it was for the same reason that you PMed me—you didn't see it. I think that rather than assume it's because you missed something because you didn't play, you should assume that it was either not as powerful as you heard it was, or that it wasn't meant to be "good" until late in the test.
At any rate, you can just abstain on voting about Manaphy. As you know, you used Latias in every single battle—your opponent used it in 25-of-47 battles. That only put you at 38th of 933 accounts, which you realize is not that far from 55th for Manaphy. I don't think there are many people who can make a "totally educated" vote about Manaphy.