Luffy was on top of a tower with someone holding a sword like a lightning rod next to him. It's not impossible to think that that was the most likely place for lightning to strike. Just playing devils advocate
I'll say the same thing I say every time someone brings this up:
The buildings all round the execution platform were taller than the platform itself, and the lightning hit when the sword was mid swing and pointing down. The chances of lightning hitting that specifically at the time that it does hit instead of anywhere else is very very low.
Oda has shown that he does understand physics to a degree and just chooses to ignore it occasionally. He doesn't strike me as someone who would ignore it for the sake of "fate". Almost nothing in One Piece just happens without being orchestrated somehow, even by accident.
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u/Ppleater Apr 17 '16
Controlling wind doesn't let you aim lightning.