I bowled the Pro-Am here in Milwaukee a few summers ago when the PBA was here
we had 6 "pros" rotate through for 3 games total, every 6 frames
it was a THS and a "9" pin tap for us mortals
the pros shot a natural 900
regardless of style, they hit virtually the same mark every time (each of the 6)
we had Barnes, Mika, Missy, Patrick Geradi, Eugene and Jason Sterner(Sterner won me a free ball when he shot 300 in match play)
these aren't exactly slackers by any means, but if you think these guys & gals can't measure up in a house shot, your delusional
Standing left and pitching right with 3-4 boards of miss room either way on the THS is far different than repeating shots on a sport pattern where the release, ball speed and margin of error down the lane is minimal.
no matter if it "looks" goofy or not