Jaylon Smith accomplished NOTHING his rookie year. And then accomplished next to nothing his second year, supposedly healthy. Myles Jack accomplished little his rookie season because he had a lot of talent in front of him, and took a huge leap forward earning a starting position on one of the best D's in the NFL.
The comparison is between a guy who was hurt and may never be 100% vs. a guy who COULD GET HURT but has been producing while pundits and medical experts sit on their thumbs proclaiming the injury will happen any day now.
Anyone remember Ron Leary? He is still playing and playing extremely well YEARS after he was diagnose with his "potential" for injury.