I'll go with jobs, but only tax-financed ones. I'll go, tentatively, with discoveries, although everything to come out of the LHC so far is simply confirmation of the same old Standard Model we've known since the 70s. The SSC would have been able to probe higher energies, but as things are standing, there is no indication of new physics; if it exists, it could easily be out of range for both the LHC and the hypothetical SSC.

More to the point, the economic value of those discoveries is almost certain to be 0, for simple reasons of scale.

As for innovation, what has particle physics brought which would not equally well be brought by any number of other large scale technological projects? We all know the "WWW invented at CERN" story, but surely we also all realize that the physics input to the WWW was exactly 0, that any large organization needing to handle large number of documents over a heterogeneous network would have come up with something similar, that others probably did, and that the real reason CERN's solution took off was it's being free open source?

Particle physics is a luxury. At best, it's pursued for reasons of intellectual curiosity. Trying to portray it as an economic engine is not going to convince anyone worth convincing.