Yep. That's half of why kobolds in our community Kobold Kamp are so fucking hardcore right now. It doesn't matter if their dinky stone spears can't get past metal armor, what matters is we can dole out more hits than the enemy.
The armor DAMAGE system however is fucked. I beefed up megabeast-tier bone in Adventurecraft, to match or exceed the shear strength of copper. And mundane wildlife can still get through it.
Yeah. I've noticed the armor fuckery. My lumbering characters in full iron get ripped to shreds by gobbos and kobolds. It's why I go for all-dodging and all-blocking, besides weapon parrying and all. Sometimes I still go with a helm, 'cause head armor still seems to work most of the time, unless it's a solid hit and pulls the neck.