don't know.
Maybe it is like chevys and caddies. Both made by the same company but with different leadership and what not.
But it is odd to me that a DeWalt dies easier then a Black and Decker. Don't get me wrong, Black and Decker makes really good products and I use them often enough. But DeWalt is geared to the more heavy duty users, people that do a lot of projects or are in construction.