Well i guess thats the result of two different styles.

Wrestling counter to a shot -> sprawl and pummel underhook
Jiu Jitsu counter -> scoop the head for a guillotine and sit on it.

The "Uke" went for the head instead of the underhook. No underhook=no latdrop.

Had he tried the lat drop i would expect tonon to still land on top bc he was already cartwheeling.
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God i love fight science.
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Check out these lat drops..