Arnold Schwarzenegger and Franco Columbu were both incredibly strong bodybuilders. They competed against each other, and both achieved great success. Franco was more muscular than Arnold. He had a more finely-tuned physique and was known for his impressive strength. He could perform one-handed pull-ups with 100kg of weight attached, which is an incredible feat. Arnold was no slouch, but Franco was undoubtedly the stronger of the two. When it comes to overall strength, though, Arnold has the edge. He could bench press 520lbs (235kg) and squat 700lbs (318kg). Franco could only manage 455lbs (206kg) on the bench and 605lbs (274kg) in the squat. So while Franco may have been stronger in terms of muscle, Arnold was stronger in raw power.