If anything, I'd argue he's portrayed slightly too prone to obvious errors. He kept needing prompts in issue 4 to realise what the clues meant. It was understandable with the missing books, but it kind of reeks when he had trouble realising that one of the clues was a cypher. I don't know, maybe it was the fact they kept using that as a plot device in immediate scenes.
I absolutely agree that the narration feels melodramatic tho.