Darius' passive is like Twitch's passive on steroids

Hemorrhage Darius aims his attacks strategically, causing his target to bleed for 9 (+1 per champion level) (+0.3 per bonus attack damage) physical damage over 5 seconds. This effect stacks up to five times.

Reaching 5 stacks or killing an enemy champion with Noxian Guillotine activates Noxian Might for 5 seconds. During Noxian Might, Darius gains 40-200 bonus Attack Damage and applies max Hemorrhage stacks to enemies with basic attacks or Decimate's Blade.

Deadly Venom Twitch's basic attacks infect the target, dealing 2 / 3 / 4 / 5 / 6 true damage every second for 6 seconds, stacking up to 6 times. The amount is increased every 4 levels.

The damage discrepancy is just ridiculous without even considering the portion where Darius gains bonus damage for landing all 5 stacks. Twitch's passive is inferior in every way. Passives lately have become skills all unto themselves, while skills like Q's and E's get passives that are more in line with the passives of the past. A lot of the older champions are getting left in the dust for precisely this reason, and I hope someone at Riot recognizes this and believes something should be done about it, whether it be buffing old champions up to current standards or not overloading passives quite so much.