Not on the PSA version but rather the Baby Browning vs the FN 1906 Vest Pocket 'Baby' Browning.
Owning, carrying and shooting both I far prefer the latter over the former. True, the Baby Browning is slightly smaller but I find the difference in concealability negligible while the FN 1906 easier to shoot and far more controllable. Both were made by the same company and are equal when it comes to reliability but I find the ergonomics of the FN 1906 far superior to the later Baby Browning.
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The Baby Browning:
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The FN 1906 Vest Pocket that was marketed as "Baby":
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I also much prefer the FN 1906 over the slightly later Colt 1908 version for ease of takedown. The FN version uses two slide notches; one as safety and the other as the takedown barrel rotation notch while the manual safety on the Colt is designed to line up the ejection port but barrel rotation for takedown is the 'find it by feel' method.
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