Hussar
Legend
Not only is it not persuasive, it wasn't even my argument!! It takes no more skill to roll low than high, but then I didn't say that it did. What DOES take more skill is to be successful with low stats, which is something only rolling allows for(by RAW(yes I know how you feel about that)). The skill involved with system mastery in point buy is miniscule compared to rolling low. The skill is over and done with in a very, very small fraction of the game, where low stats is for most or all of the campaign.
That's not really accurate though. You can simply arrange a standard array such that your prime stats are lower. Sure, secondary stats will be higher, but, then, the point is to add challenge to the character right? So, he's going to have a harder time, most of the time. And since die rolling will rarely result in an array that is lower than standard array across the board, it's really not any different.
Well, the difference is in the amount of control in chargen, but, after that, it doesn't really matter if your fighter has a 13 Str because you rolled it or because you chose it.
Additionally, die rolled characters will consistently have at least one higher die roll above 15, meaning that most die rolled characters will actually not achieve what it is you are looking for.