German, where noun gender doesn’t make any sense? and things like dative case have to be specifically marked? German and English have the same lineage anyhow, both have irregular verbs (in many cases English irregular verbs are also irregular in German).

Analyzing any real language (not Esperanto) is going to be extremely difficult. I would think English is marginally easier than say Korean where everything is based around context, including dropping the subject itself and particles. Otoh, some aspects of Korean are probably easier than English. And all 3 have irregularities despite Sejong the Great purposefully creating Korean Hangul.