Better bowlers "should" be more accurate, and given using the ball that gives you the best chance to score at all times, whether it's pearl or solid, and making only lateral moves, that doesn't sound like a bad number. The more accurate you are, the faster you burn up your line. The more aggressive the ball, it burns it up that much faster, and when you have several people on the same line, it disappears pretty quickly. There are a lot of ways to avoid this, but when he says typically, he means typically, and I'd say it's an accurate statement.
To combat this, I usually start out with a ball that's not quite hooking as much as I would prefer so that when the shot starts drying out by the end of the first game, I can ride it the rest of the night and move as little as possible. The other thing I do is to play where nobody else is playing. Got a lot of crankers on the pair, I'll go straight down 2nd arrow, lot of strokers, I'll get in deep. I don't like moving or especially changing balls (just because I don't like taking a couple frame hit every game while I'm dialing everything back in) if I don't have to, so if you apply a little strategy, you can avoid going 250-150-250 in favor of 230-230-230.