The X Factor has a strong mass bias, so even if the drilling looks the same, it might not be. There was a discussion about how comparable these ball are. I don't know if we were able to prove anything, but I would think the X Factor is quite a bit stronger than the Trauma. The core is obviously stronger, and newer covers are almost always stronger than ones from a year or two ago. My guess is that the X Factor needed more oil and was rolling out.
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