The greatest crabs are not always the best meat.

Size is not a reliable measure of quality. A crab that looks more substantial may offer less satisfying meat than a smaller one.

More broadly, the proverb warns against letting an impressive appearance settle a judgment. What matters is the value found on closer examination, not simply how large something seems.

Use this proverb when someone assumes the largest or most imposing option must be the best. It encourages a closer comparison of what each choice actually offers.