To meaningfully compare adaptations of classical works, the strategy that would be most effective is analyzing how each version uses symbols.
This approach allows you to explore deeper thematic elements and the ways in which different adaptations interpret and convey the original material. Symbols often carry significant weight in a narrative and can reflect the cultural context of the adaptation, the intended audience, and the artistic choices of the creators.
While comparing error differences, character names, or titles can provide some insights, analyzing symbolism offers a richer understanding of how various adaptations resonate with or diverge from the original work's themes and messages.