The 6 screws are all thick enough and sufficient to secure the bracket securely. (I have 4 placed in the upper recesses and 2 in the bottom) I also tend to feel that if too much load, the wall gives way first, as the holder. :)
The pivoting movements are a bit cumbersome, but personally I prefer because the TV will not turn on its own in any direction. A few months ago I had even my parents ordered the same support again - to the fullest satisfaction.