Computed ranking problem where least ranked course is placed up high

[leaf0262-maker]

From ranks 4-8, the order aligns with my course ranking of how much I want it. But from 9-13, the order is reversed. PL which is what I prioritized is lowest while CDE what i wanted least is higher in the computer ranking

my link: https://tutreg.com/order?share=GE2215:LAB:3,CS1010S:TUT:22,GEA1000:TUT:E39,PL1101E:TUT:E19,CS1010S:REC:08,HSI1000:WS:C9,HSH1000:TUT:W55,CDE2501:TUT:UA1,CDE2501:TUT:UA2,HSH1000:TUT:W56,HSI1000:WS:D9,CS1010S:REC:07,PL1101E:TUT:D3,GEA1000:TUT:E38,CS1010S:TUT:25,CS1010S:TUT:06,GEA1000:TUT:E37,CS1010S:REC:15,HSI1000:WS:F9,HSH1000:TUT:W32&classes=GE2215-LAB:3__CS1010S-TUT:22,25,06__GEA1000-TUT:E39,E38,E37__PL1101E-TUT:E19,D3__CS1010S-REC:08,07,15__HSI1000-WS:C9,D9,F9__HSH1000-TUT:W55,W56,W32__CDE2501-TUT:UA1,UA2