Today's ranges (high - low) are narrow, the largest is 30 pips. You will note that for certain pairs, the Stop value is a few pips away from either the High or Low value which pretty much guarantees your trades will get stopped.
Under these conditions, it makes sense to use the "opposite" High/Low values as stops e.g. if a currency moves up through the High value to trigger a "Buy" then use the Low value as the stop.