Sylvester Stallone had two good movies, the original Rocky and original Rambo. Arnold had a better physique, better one liners, a lot more good to great movies on his résumé, almost single handedly created the whole action hero genre and was the greatest person ever at it, and is one of the most recognizable people in the world. Arnold has also done things other than movies and been successful in them like politics and bodybuilding. While they both had strong accents Arnolds doesn't make him seem like he has a borderline speech impediment. Overall I say Arnold wins this handily, and I say that as somebody that tends to like Stallone also.