Talk:Zed/@comment-15280970-20160211231409/@comment-24385282-20160214002319

is only 250g cheaper for low AD by AD assassin item standards and only 10 armor pen. It can only prevent a low amount of damage, given that the shield it gives scales with bonus MR, a stat that most AD assassins will have fairly little of, and even then it only works against magic damage.

, on the other hand, for just 250g more offers more AP than nearly any other item that a mage will buy, a decent chunk of armor (only 5 less armor than Maw gives in MR - seriously, what do you mean by "low stats"?), and temporarily prevents all forms of damage completely up to no cap while allowing you to wait on cooldowns. Most AD assassins have very clear burst patterns, and the 2.5 seconds of cooldowns they get won't be enough time for them to come back - they'll have to back off before you get out of Zhonya's or you'll be almost guaranteed to get the kill.

,, , and are all good examples of this - the moment one of them comes out of their ultimate, pop Zhonya's and they're done - wasting the CD and lowering their chance of killing you to roughly 0. Furthermore, Stasis has many more uses than Lifeline - for example, when sends a  towards you from bot lane while you're recalling, an AD assassin with Maw is dead but a mage with Zhonya's lives.

Now, remember this is all situational. It depends on which mage or AP assassin and which fighter or AD assassin buys the item, plus the skill level of their player and their enemy, which of them gets more/better ganks, which of them farms better, etc. Farm especially - it only takes 7 cs to make up the cost difference between the two items.