What supply chain drivers and metrics might explain this difference in performance?

Q1	Financial Measures	Walmart	Macys
	1. ROE	=Earnings Before Interest/Share holders Equity =17,756/81,738 =.2172 or 21.72%	=1,486/6,051= = 0.2455 or 24.56%
	chain2. ROA	=Net Income + [Interest Expense * (1-0.35)] / Average Total Assets =17,756 + [2251 * .65]/203,105 = 17,756 + 1463.15 = 19,219 =19219.15/203,105 =.0946 or 9.46%	=1,486 + [388 * (1- 0.35)]/20,991 = 1,486 + 252.20 =1,738.20 =1,738.20/20,991 = 0.0828 =8.28%
	3. ROFL	=ROE-ROA =21.72-9.46 =12.26%	= 25-8.28 =16.72%
	4. Profit Margin	= Net Income + [Interest Expense * (1-0.35)] /Sales Revenue * 100 =17,756 + [2251 * .65] = 19,219 =19,219/469,162=.0410* 100 =4.10%	=1,738.20/27,931=.0622* 100 =6.22%
	5. Asset Turnover	=Sales Revenue/Total Assets =496,162/203,105 =2.31	=27,031/20,991 =1.33
	6. APT	=Cost of Goods Sold/Accounts Payable =352,488/59,099 =5.96	=16,752/4,951 =3.38
	7. ART	=Sales Revenue/Accounts Receivable =469,162/6,768 =69.32	=27,931/371 =75.29
	8. INVT	=Cost of Goods Sold/Inventory =352,488/43,803 =8.05	=16,752/5,308 =3.16
	9. PPET	=Sales Revenue/PP&E =469,162/116,861 =4.02	=27,931/8,196 =3.41
	10. C2C	=negative Weeks Payable (1/APT) + Weeks in Inventory (1/INVT) + Weeks Receivable (1/ART) = negative 1/5.96 + 1/8.05 + 1/69.32 = -0.17 + 0.12 + 0.01 = -.04 times 52 weeks = -2.08	= negative 1/3.38 + 1/3.16 + 1/75.29 = -0.30 + 0.32 + 0.01 = 0.03 times 52 weeks = 1.56 weeks