Would the reaction have been as calm and measured if Jodi Arias had been given a sentence that contained this level of discretion and consideration of mitigators by the judge? I suspect not even a little bit calm.
IIRC she too said she was remorseful and apologised for the pain she had caused. Pistorius has done no more than that and there is no more evidence to suggest he is genuine than there was in her case. He was out partying not too long after killing the love of his life. Begging for help to save the life of someone you know is dead is proof of absolutely nothing.