「悲剧」和「卖惨」的区别是什么？

While modern plots increasingly lean into tragic twists, the quality of these "gut-punches" varies. The scholar Wang Guowei categorized tragedy into three levels—so, what qualifies as a "high-level" tragedy? How would the tone change if Captain America died instead of Iron Man? Why does 1999 dare to create flawed characters, and where do works that rely on forced pathos go wrong?