Even dull (D/T) Soakers used to last at least 200 games before there was even a hint of its losing reaction.
The comparison between the Hot Sauce (pearl) and the S75 is kind of difficult btu I understand yourpoint of view. I'm still wondering if the differences between those balls was not previously hidden by the house blended pattern and now, while the pearl (Hot Sauce) is still hooking, there really isn't enough oil for the S75. I do not know, I just wonder.
Unless you've changed the surface, the S75 is for medium-heavy oil, a little below or a little above. The Hot Sauce is generally considered to be a medium oil ball, notwithstanding its large backend strength. They can overlap but are probably good as goto/complementary balls.
Since no oil is coming out, I would have to assume you're not using the S75 on enough oil for it to retain energy. Either try some other methods (dishwasher, no drying cycle, Revivor oven) or try refreshing the cover on the S75: Sand it with 600 or 800 grit (US) and put a light (by hand only) polish over it.
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"None are so blind as those who will not see."