A (forged) 340 Crank is Not a (forged) 273/318 Crank?

Max1196 said
They both weigh the same, but the mass is located differently, Left= 340, right is 318
View attachment 1715166470

The left crankshaft is a forged crankshaft the right crankshaft is a cast.
My bad I didn't blow the picture up good enough to see if that is grinding on that throw, both cranks are forged.

A cast crankshaft should be lighter than the forged.