I disagree.
If you are a guy who consistently is pretty accurate but have trouble carrying on league conditions....You may go up on PBA patterns.
I do...when I bowl in PRO ams I am often just slightly trailing the pros which is higher than my normal league standard. Many of my acquaintances go from the 1902 to the 130s.
Because PBA patterns in general have a lot of backend and they are tough to find the pocket...often with a lot of head oil in the front and a pretty flat pattern.
This is a shot that is not that hard for me. However I struggle in league often if the requirement is speed.
REgards,
Luckylefty
PS however one time I took in my league stuff(high flare stacked stuff I was killin our local shot with) and embarrassed myself like everyone else!
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Proud owner of a 140 first game average this year! Don't bowl me the second two games though! (two warm up balls in league..thanks proprietors)