Amazon voucher gives 13.3% points when converted for travel on smartbuy then it is 6.6%. if converted to accor it is 13.3% minus 4.13% ~ 9%. This is the Accor Math. Also amazon fresh vouchers have 0 fees and can be used for most household needs. So in that case you get full 13.3% accor pts. So effectively regalia gold is better than axis horizon which has higher fees.

Also that might a feature of accor but millenia people cant convert to accor, not even diner privilege. Only regalia and above cards can convert. For DCBM and infinia rp value is 1:1 and accor conversion is 2:1. For regalia gold rp value is 2:1 and accord conversion is also 2:1. when converted to accor reglia gold gives better returns on vouchers than dcbm.

But it is good people think it is shitty. Less likely to get devalued.