This is poor reasoning. You are deciding an objective fact (whether someone stole ideas from someone else) with a subjective assessment (whether someone is an amateur or a professional). As Apple themselves have demonstrated with their asinine "look and feel" lawsuits, intellectual property law does not work that way. You cannot blow off the accusation of stealing ideas by just pointing out that the end result sold more in the marketplace. If, tomorrow, I were to invent a novel topping for a hamburger and sell the idea to, say, Sonic drive in who sells a million a day and then McDonalds "copies" it and sells a billion a day that McDonalds is the "great artist". It's bullshit and you know it.