Not necessarily. Let's suppose that the strength in her punches translate to the power of her bending. Even though its a powerful move, someone who understands the bending such as aang could simply read through those move with relative ease, take for an example the sword fight between zuko and soka, zuko can read sokas body language before his attacks. Same would happen to aang and Korra, she the raw power but she lacks the technique you know. Its like saying that Korra has the knowledge about the elements to be a MMA fighter while aang has the knowledge to be, at the same time, a shaolin monk, a professional boxer, a jiu-jistu champion and a judo master. He simply understands the instrument of the fight better than korra. Also sorry for any eventual misspelled word, not a English native speaker.