Ditto on the rods. I also agree the pistons look cast/hypereutectic. The bottoms have alot of contours and detail. Forgings usually are simple and fairly thick. Most commonly used forged pistons are also made by a namebrand that in many cases puts the oversize on the crown.
If it makes you feel any better, there was a person on the Corral that split a supercharged roller 302 block from Kragen, but didnt break any of the cast pistons.