It seems that the SA-X should be able to use the shinespark. It definitely has it, because when you beat Serris, Adam says you recovered another ability. You cannot recover an ability you never had. SA-X copied you at full power, and so should have it. There are spots where it could use it, i.e. in the SA-X sparked video in the Fusion section, Wassup Dawgs built a spark and SA-X didn't. I know this could be answered by saying "It's a video game", but I still find it interesting.
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