Tiffany's (TIF) 3rd-quarter earning destroyed analysts' expectations—but what are the implications for luxury going forward? In this segment from Motley Fool Investor Beat, analyst Jason Moser explains why luxury retailers like Tiffany and Williams-Sonoma (WSM 0.03%) will see strong holiday season sales without having to resort to Black Friday tactics like Wal-Mart (WMT 0.60%) and Target (TGT -0.21%).