T-72 have a ground pressure footprint between 11,8 to 13 psi (0.90 kg/cm²) depending of variant and M1 have between 13.1 PSI to 13.8 PSI. It's not that much different.
I don't think they will fare that worst into mud, but nothing on the front will be able to pull them out of there if it happen... so if stuck near the front. You let it there or you risk chaining 2 m1a1 to pull it..
So it is slightly worse than T-72. For all I know my point still stands. We all know how those fared in March 2022.