For i$)$ROE$,$ ii$)$ROA$,$ iii$)$ profit margin, iv$)$ asset turnover, v$)$ APT, vi$)$ ART, vii$)$ INVT, viii$)$ PPET and ix$)$ C$2$C$.$ speculate $($with justification$)$ on the most important $($relevant$)$ supply chain driver$($s$)$ : Facility, Pricing, Inventory, Sourcing, Information & Transportatio that might explain the difference in performance.

$\backslash$table$[[,$Walmart,Macy's$],[$ROE$,21\mathrm{.}72\%,24\mathrm{.}56\%$