Imagine using metrics from the 90's to compare GPUs ??
Every GPU can push massive amounts of pixels around, that's not the issue. It's how they process those pixels. How's the M1's shader performance? How's the M1's real time ray tracing performance?
Which is faster? A Honda Civic with ~ 170 Horsepower or the Titanic with ~ 50,000 Horsepower? Hint: One of those two has a top speed of 120+ MPH and gets from 0-60 in 6.8 seconds.
There's a lot more to GPU performance than theoretical TFLOPS and fill rates.