The classic and modern kettlebell styles have a marked difference in their trajectory, which may affect the ground reaction force and the weight shift.

Swings get all the love, but the one-arm snatch rules all kettlebell movements.

Strength from the the kettlebell swing improves deadlifting, squatting, and even weightlifting.

I find it difficult to believe that a simple tool of strength can be used so differently. Here is an overview of their differences (though, there are also many similarities).