stroker engine balancing

Post a report....well keep it simple, like on a scale of 1 to a 2 maybe.
Seems kinda redundant, where's all the knowledge. H rods will all weight the same. Pistons will be the same weight and the crank we don't mess with....don't see a reason to balance .Enlighten me. Is the factory gonna sell such cramp that we need to double check?