[SagaraSouske]

Originally Posted by Anh_Minh

Spoiler for answer:

They're tougher and hold a better edge. More flexible, too, but that's not relevant here.

Spoiler for future manga event:

At one point, someone used an ax against a small (3m or so) titan. It just couldn't penetrate enough.

Spoiler for canons, I think it was mentioned in ep 5:

Grapeshot, even to the back of the beck, isn't lethal. Do you think arrows would do better?

Shells can kill a giant, but it'd take a miracle for one of them to hit the right spot.

Use axe against plate mail and you can't penetrate either. Axe can't even go through chain mail easily. Arrows have no such problem. Unless the blade is made some special material with special tech, i don't see how arrows won't work where blades would. And even if it is, use the same tech and material on arrow heads is all you need. Grapeshot is equivalent of 1 arrow. 1 arrow may not be lethal, 100 would be, or at least it is more damage then simply cutting in melee range.