Reading raws compared to official translations is like tasting the original dish versus a skilled adaptation for another palate. The Korean text has specific cultural puns, slang, and webtoon-specific sound effects ('bbang!' for a punch) that can get smoothed over or replaced. I noticed in some comedy series, the timing of a joke's delivery in the panel layout relies on Korean sentence structure, which sometimes gets shifted in the English version, making a gag land a little softer. The art stays the same, obviously, but the texture of the reading experience changes.
Official translations also have to consider market norms, like changing honorifics to more Westernized naming patterns or adapting a food name to something more recognizable. It's not necessarily worse, just different. I appreciate how fan translations sometimes keep translator notes to explain cultural context, which the official versions often can't afford space for. So while the official ones are polished and legal, reading the raw gave me a sharper sense of the creator's immediate, unmediated voice, even with my limited Korean.