Jezebel, Soho Theatre
If comedy is tragedy plus time, either too much has elapsed since the fictional events of Jezebel, or not quite enough. Newcomer Mark Cantan's uneven screwball pitting a methodical couple against a scatter-brained opposite, with wacky misunderstandings aplenty, lacks the emotional heft to be more than genially inconsequential, but is too enamoured of the old-fashioned TV sitcoms it references to subvert rather than m…