Smith was never busted for PEDs.
In an objective prospective, I'd take Smitty over Peppers (even with his anger issues) mainly because he was 10x more consistent. Julius was on cruise-control for half of his career at Carolina. In his prime, Steve was triple-teamed on several occasions and still managed to get open. Peppers would get double-teamed and, for the most part, that was that.
Overall, I'd rank Kris Jenkins higher than Julius Peppers. His impact was far greater.
Outside of one year, Peppers has been consistant. He might not of been the hands down best defensive player....but not meeting a fan expectation doesn't mean inconsistent.
Kris Jenkins at his prime I would agree....but he did that for a small window of time. Peppers sleep walks to 10 sacks and 5 FFs.....the type numbers generally celebrated. He does it every year.