Is golem harder than Plantera?

Could you elaborate on the comparison between the two entities mentioned in the paragraph - Golem and Plantera? Specifically, I'm interested in understanding whether Golem is perceived as being more challenging or difficult compared to Plantera. Is this a technical difficulty we're discussing, such as the complexity of their respective coding or algorithms? Or is it perhaps a metaphorical comparison, referring to the perceived difficulty in acquiring, utilizing, or understanding each? Clarifying this distinction would help me frame an accurate and informed question.