This is one of the very few reviews where I haven't actually watched the film or show. However I have read the plot and that was good enough for a low review for me. The story is just so depressing and negative and the final fight between Rocky and his former student is a street fight rather than in the ring. For me that destroyed the essence that made Rocky so good.
Even further, Stallone himself hates the film and disowned it, stating he only made it because he got greedy.