Butterfly Short Pips Impartial XS vs XB :- Does this make sense ?

[loop hoop]

Take a look at Butterfly Official pages for XS & XB

Butterfly XS

Butterfly XB

Take a look at atttachment at the bottom pulled from above pages

The spong hardness for both is 30 . Does it make sense ?

Both speed & spin for XS are higher than XB
Again does it make sense ? I would expect the Spin version (XS) to have more spin but less speed & Nlock version (XB) to have more speed but less spin . I understand arc for XS being higher than XB

So I would tend to think the sponge hardness value is stated wrong. XB should be higher than XS ??
Unless only the top sheet for XB is harder than XS ??
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XS vs XB.jpg (10.37 KiB) Viewed 2057 times

[Murat]

well I noticed the pip alignment for XB is vertical but for XS it is horizontal but I cannot see this difference causing less speed for XB.
If any I would tend to think XB would be faster ?
Maybe the data sheets got cross switched ?