434g would seem like a reasonable way to express the mass of the thing too.
A similar thing happened to A&W [0] with their "1/3 pound" burger selling fewer than a competitor's "1/4 pound" burger — effectively because "3" is less than "4" and fractions aren't for everyone.
[0]http://www.motherjones.com/kevin-drum/2014/07/great-third-po...