When have safeties been used as a measuring stick for one's on the field success? All a safety is, is a tackle for a loss that just so happened to be near the opponent goal line. A more objective stat, then, would be to look at total tfl's and not just the tfl's that happened to be near the goal line (a position that the special teams, and not Laptard, put the defense in).
So, let's look at total tfl's, shall we? Laptard has 8.5, and Harold 10.5.
Safeties? Seriously? That's like saying Jesse Tetuan was a better defender than Aqib Talib because Jesse Tetuan blocked a punt once.