User blog comment:"Mad Dog" Cain/Mammoth v Blockbuster/@comment-4507215-20120416000936/@comment-4928331-20120416002753

Mammoth is stronger; Superboy had steroids pumping on his arm when he obliterated Mammoth with heat vision and high-speed punches. Obviously Superboy's speed and strength were enhanced.

Blockbuster might be more durable though. It took a collapsing building to take him out in the first outing, while it just took an electric shock to take care of Mammoth.