The PBA logo means that it was a give away during a PBA event. I do recall when I was about 15 or 16, they had a PBA event in Michigan, and for the Pro-Am they were giving away a Storm ball with your entry fee, and I do believe it was the Thunder Road. That was about 11-12 years ago.
I never got one, so I can't be completely accurate, but I would think a ball like that would handle more of a medium to medium light pattern. You have to realize that the "Heavy Oil" equipment from back then in some cases couldn't stand up to the actual heavy oil conditions we have today.
It is probably pretty comparable to a mid range piece of today. If I had to guess of course and depending on how you throw the ball.
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Ahhh Disco Biscuits!