The Amex Gold you get 4 points in groceries and dining out - if you redeem for cash they are worth $60 per 10,000 points - so that’s 2.4% cash back. 3 points back on flights so that’s 1.8% cash back

Platinum card is 5x points on hotel booked through their hotel collections, so that’s 3% cash back if you redeem for cash.