> There seems to be a very strong urge not to compare any of them as better, which puts users in a position of information asymmetry where they might not make t

> There seems to be a very strong urge not to compare any of them as better, which puts users in a position of information asymmetry where they might not make the best health choices for themselves. This is a bad analysis. Disease management is simply not a case where "best health choices for themselves" has any meaning whatsoever. The best choice, the UNAMBIGUOUSLY best choice, for everyone, everywhere, is to get the vaccine that is available first as soon as you possibly can. Period. That's the "best" choice. Imagining that you can do better individually relies on an intuition that everyone else will be following the rules while you cheat. And that's why no one wants to give you answers as to which the "best" vaccine is.