The tone in which he speaks. It signifies that he was both pleased and saddened. No doubt that my investigations stirred up the results rather quickly, but the fact that he never would have found them anywhere as close to it. "There are several factors. I knew these relics in their prime. I have had them in my own hands at one point. I would have found them sooner if the Founders didn’t put an anti-scrying enchantment on them." Plus the soul fragment might make it hard.