I have to respectfully disagree somewhat in regards to balls not looking any different on a THS. If one lines up "properly" to the oil line of a particular ball, only that ball will be successful or useful on it. I have done this in the past.
I could picture lining up with the GP2 and getting to the pocket for a strike (so long as there is enough oil). Power Machine could maybe hit lite but would be light majority of the time and Xception should come up even shorter in total reaction. This to me is how I show the strength of a cover and core.
Now I move right to get the Power Machine up to the pocket, GP should go high and Xception is or should still be weak to light.
Move again now for the Xception to hit pocket and both GP and Power should be high to brooklyn.
I understand what Brit is saying about certain medium pieces being able to outhook high performance pieces (in total movement) but this is due to the condition (amount of oil present) and the line played on that condition. If we just stood left (using center oil) and threw balls right (into the dry), then yes, whichever piece which can store more energy will make a more severe/violent movement once it encounters friction.
I also use the oil line or dry earlier because I also feel the majority of Joe Bowlers is more of a down and in player. Even as the percentage of "power" tweeners is growing with the newer generations of bowlers, down and in or slight swing bowlers still are in the majority. Hence my reasoning for making vids up and against an oil line vs just standing left and throwing right.
Analogy time...Let's take a racing slick/bald tire, all season, snow tire and a set of chains. We have 4 different types of friction /traction capabilities but only when it rains do we see the racing slick slip or slide. Now only in "x" amount of snow do we see the difference from an all season tire to a snow tire and then only in heavy snow or very slick conditions do we see separation between the snow tire and chains.
Okay, what this means is that not until we place each of the different types of traction we have on the "proper" surface for it to shine, we don't always necessarily see differences in their strengths to weaknesses. Again, my reasoning as to why I use the proper oil line for each piece to be able to show this separation. Hope this helps explain some...
Brit, not knocking you here bro. I feel you do a great job and even just doing what vids I used to do for Track took a lot of time and effort many don't realize. Keep up the good work....
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Rick Leong - Ten Pins Pro Shop
Tag Team Coaching - Co-Founder
"El" Presidente of the Legion