Not «common» good, "superior" good. Alongside with that, you have put many unrequired implicits in your simile.

Your character H. has reached a moral judgement to the best of its intellectual capacities and past and specific effort. Give it enough abilities and material and resources, it will reach an optimal ethical judgement¹.

Before the conditions of optimality though, its judgement will easily not align with yours (and possibly even after, depending on your judgement skills).

¹Some interesting caveats may be raised there, but.