It depends on what the JIT does exactly, but in general yes a JIT may be able to make optimisations that a static compiler won't be aware of because a JIT can o

It depends on what the JIT does exactly, but in general yes a JIT may be able to make optimisations that a static compiler won't be aware of because a JIT can optimise for the specific data being processed. That said, a sufficiently advanced CPU could also make those optimisations on "static" code. That was one of the things Transmeta had been aiming towards, I think.