That page above with Lois and Clark reacting to that one Firestorm villain seizing power is the bulk of Clark's involvement in the issue; Lois references Perry being Jon's godfather, reaffirming for the 8th or 9th time that no, Bendis isn't killing off either of them. Clark is, however, seen for a couple panels as Superman in orbit later, listening in spoilers:end of spoilers
as Lois interviews Lex, and learns that according to Luthor, America has been creating superhumans with the aid of someone who was at some point in the Justice League.
Aside from his physical presence, there's another mention that to the public at large, with all the chaos around superhumans given the Supermen Theory, Superman himself is the one figure still widely trusted and believed in (which seems, to me at least, to be more and more clearly setting up the faux-reveal that he's Dr. Manhattan). It almost feels like rather than simply not prioritizing him properly, Superman's being deliberately kept off-screen but significant in the same way as Manhattan as a 'larger' figure than the mostly human ground-scale struggle we've been seeing so far between the Watchmen characters, Batman, or the international superhero drama playing out in the background.