I don't know anything about Lane #1 balls but please read this great definition of what a bench mark ball is written and posted by charlest previously on the LM/L forum. Great definition and should be taken to heart by those that REALLY want a bench mark ball for any mfg. IMO.
Benchmark balls are medium overall hooking balls, with medium length, and have a medium backend. They are used on medium oil patterns and they are defined by their arcing breakpoint. They are used to tell the bowler immediately what kind of pattern they are on when all the usual factors are unknowns. They also tell the bowler if they need a stronger or weaker ball and where to play the lane.
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Scott