This is the main thing I really found odd when I came to watches at
the beginning. As you say, it is totally misleading, for a "normal"
client but even for someone who knows a little about watches.
That's why I made a post about this issue, before summer, this week-end.
On the other time, I imagine it would be very difficult to make a standard chart, for all brands of course, that would take into account a soft spalsh or a harder one, swimming gently or diving etc...
Maybe too much different situations and very difficult to create standard testing for...
As you say, this is not the issue a seller talks necessarily when a client is taking delivery of his new piece and there should, as you suggest, certainly be a more detailed explanation of what it can or can't do.
You only have this information if you ask for it (which I imagine 99% of the clients don't think about doing).
I think it is the same issue with the death zone for date settings bewtween 9 or 10pm and 1 or 3 am.... It is nearly a secret.
Cheers, Mark