A M1 Max has 400GB/s of memory bandwidth but the CPU is only capable of using half of that (see https://tlkh.hashnode.dev/benchmarking-the-apple-m1-max#memo...). So a framework 13 with ddr 5 5600 with 86GB/s of memory bandwidth has a bit less than half, nowhere near ⅕th.

If we compare like-to-like the rtx 5070 in a framework 16 has 384GB/s on its own, add the 86 and the combined memory bandwidth is higher than a M1 Max.