Law can't break out of gravity? Zoro fans legit have screws loose.
Law literally sliced down a meteor like it was nothing
Every feat Zoro has done Law has done it 10x better. It took Zoro multiple named attacks to cut Pica's mountain, and then cut Pica. Law did it all in 1 move against a guy with stronger CoA, and it wasn't even his strongest attack (Gamma Knife).
Like I said, look at Hawkins to see how the gap between Law and Zoro.