Hmmmmmm, how will Luffy escape? I don't see Luffy destroying meteors without G4. I honestly don't see G2/G3 Luffy escaping that encounter.
While Law's (brute) strength isn't G4 level, law doesn't rely in his brute strength alone, so his feat is G4 level.
Luffy pre time skip was able to topple down giants and buildings way bigger than a
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.
Luffy's been punching
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as big as this this since
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if not Thriller bark.
So a simple Haki third gear would do to break the small meteorite but in terms of escaping Room is more efficient but G2 Luffy is faster in reflexes and footspeed. So he can escape if he takes the matter a little more seriously then he actually does.
As for the meteor thing that was not G4 level, not even close. The power and speed in comparison to what Law has to offer is as different as night is to day, and Law recognizes that when he told cavendish that if G4 doesn't work against Doffy, then he'll die along side with Luffy.
That meteor was so small that Assimilated-Pica was bigger than that thing.
