For me, the Kinetic is much more angular than the 505A. I have both. The Kinetic is drilled 5" x 4-1/2", 2" pin buffer, surface at 800 grit and polish. 505A is drilled 5-1/4" x 4-1/2", 2" pin buffer, surface at 800 grit and polish. I added a weighthole 1-1/2" right of the thumb hole on the 505A. The Kinetic has a much harder turn on the backend. Not sure which one would handle more oil, as I've always kept both of them highly polished to play a more inside line. These are most definitely not the same ball.
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Hook 'em Horns!
"Stats are for losers, I like winning games." - Will Muschamp, Texas Defensive Coordinator