The common denominator
If you come to boards to complain about champion X instagibbing squishies. Ask yourself these questions first?
Is the deleter running a lethality build or arpen build?
Does the deleter have one of these items or a combination of these items?
(even without stormrazor did you eat a critical strike?)
Is the deleter using a Domination/Sorcery keystone?
Does the deleter have magic penetration?

Does the deleter have items with active/passive bonus damage?

And the most important question is...
Did the victim have adequate resistances?

Did you get blown up through a shield/heal?

Everybody complains about
but did you know a
GP can literally 1 shot you with a Q (or your whole team with a barrel chain from FoW) if you don't have any armor. God forbid he has 