I don't think neither rogue or barbarian is going to wow you with damage as they're both built for applying pressure more than anything else. You almost want the enemy to focus on trying to prevent you the deal damage because that opens up one of the spike types to drop the hammer.

This is a commonality of the classes that tend to have higher than normal initiative, enhanced movement, secondary forms of situational defenses, and soft threat to force poor decisions.

If your table generally allows people to dump damage on any target they want without any real setup then it's going to look bad just the same way that other games that focus on player versus player tactics that breakdown when speed/burst meta takes over.