Where it's headed March same-store sales at traditional mall-based retailers have been off the charts considering that many consumers had a hard time getting to the mall last year to make purchases because of the nasty weather. Macy's ( NYS: M ) crushed estimates by growing same-store sales in March by 7.3% versus the expectation of just 4.8%. Teen-retailer Zumiez ( NAS: ZUMZ ) blew away already robust expectations of 10% same-store sales growth by reporting 14% same-store growth. Even perpetual underperformer Gap ( NYS: GPS ) grew same-store sales by 8% versus the 4.6% consensus estimates. My personal rule of thumb is to question any move higher by Gap, so I feel these weather-friendly results can be largely thrown out the window.