Dungeon Meshi is much more oldschool. It focuses exclusively on dungeon crawling. The casters are much more restrictive with using magic, martial characters are more old-school grounded. Someone described it pretty well on twitter (paraphrasing here): It's like a group of veteran players out-arguing the GM that yes this totally insane holy-water strategy will allow them to beat a bunch of ghosts without actually expending any of their holy water (which they just convinced the GM to allow them to make because "herbs" are totally religious in some cultures so adding herbs to water makes the water holy).