As they both don't care if you build tank and still do damage, they can shred you whether you have 200+ armor/mr anyways?
Darius for armor pen and to finish you off with his ult, Olaf for true damage that resets with more autos.
Tusutaki1 votesDarius? Lol no. He's a early game lane bully and thats about it. Terrible at team fights compared to more versatile tanks like Renekton, Nasus, and even Zac.
Olaf? He can be but he is in need of a buff to his ult duration inorder to become relevant.
Lost R1 votesDarius is a heavy hitter and can ignore armor, yes, but when it comes to finishing off tanks with their ult, Garen is more reliable because his damage scales on how much HP the target doesn't have. With Black Cleaver, he's also really good at shredding the enemy's armor with judgement.
Olaf has an issue with fast moving targets, and especially ranged targets, so his E doesn't come into play nearly as often as you'd expect.
Trundle might do well because he's a stat thief and a pretty meaty bruiser besides. His ult steals at least 20% of the target's max HP and up to 40% of their armor and magic resist, and his Q (which comes up a LOT more often than Olaf's E) steals attack damage, procs on-hit effects, and hits pretty damn hard.
TheKingDodo1 votesno vayne is and was the answer to the menace
and 
protect the adc, so it was called. and thus the s3 meta is born
