12 inch fastpitch ball versus 12 inch mens slowpitch ball?

[Crabby_Bob]

Batfoo.com - Slow Pitch Softball Articles
[...] The ASA has only approved two levels of compression - 375 pounds and 525 pounds. [...]

300 and 375 pounds only.

 

[coach james]

Is there a difference in the seams?
I would think fp balls would have a more pronounced seam...
Maybe not, just me thinking out loud.