Resins are different from old urethanes balls.
Stronger balls like the Hy-Road need oil to perform properly. If there's not enough oil, they tend to use up their energy ("burn up") in the heads and the midlane. They have little left for hooking and hitting power is generally greatly diminished.
Weaker balls like the Trop. Breeze needs less oil to perform. It will clear the heads and midlane much better and save plenty of energy, even on light oil
Resin balls are generally talked about in terms of hooking power but that is wrong because it gives a false impression as you have learned with your two balls. They should be rated in terms of oil handling ability. People often confuse the two abilities; this is a left-over idea from the urethane days where balls were rated most of the time, by the amount they hooked. The more they hooked, the more oil they were able to handle. Again, this is not necessarily true for resin balls.
A ball's ability to hook is ONLY relative when it is used on the proper amount of oil they need to retain energy at the breakpoint. A ball only has the energy that the bowler applied with his release via ball speed and rev rate; a ball will never gain any more energy once it is released. It can only lose energy. How much it loses, as it rolls down the lane and when it hooks, determines how strongly it will hit the pins.
