Do XSLT constructs maybe have an overhead that XPath ones don't?

Michael KnowsTheseThings, but I'll hazard an answer anyway. if you look
at Xquery syntax which is basically just an xpath-like syntax for parts
of XSLT, and the fact that saxon (at least) compiles xquery and xslt
(and xpath) down to the same internal representation, I would expect
that there is negligible difference in compilation time and literally no
difference in run time behaviour when the xpath and xslt are really
doing the same thing.

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