Is the Sagan standard a kind of proportionality bias?

Is the Sagan standard, which says that "extraordinary claims require extraordinary evidence", a kind of proportionality bias?

Since the proportionality bias is a tendency to believe that causes are proportional to effects in magnitude, so the Sagan standard seem to fall into that category. Maybe if the standard was a little more specific or it actually defined what it means by extraordinay, then maybe it wouldn’t be.