It was a schwing and a hit as Paramount’s “Wayne’s World 2″ topped the charts with an opening weekend of $ 13,516,699. While the opening salvo provided a quite potent average of $ 5,632, the box office curve for the film was far from encouraging. Saturday business actually declined the equivalent of a millimeter and Sunday saw the bottom fall out of the pic’s momentum with a 45% descent.Though the change in commercial climate for “Wayne’s 2″ marks a seasonal extreme, to some extent every new potential juggernaut has experienced similar public reaction. The sole exception has been Fox’s “Mrs. Doubtfire,” which abated a modest 31% in its third weekend to finish second with $ 10,158,307. Discounting such streakers as “Josh and S.A.M.” and “The Nutcracker,” the week’s roll call reads: “Addams Family Values” off 59%, “My Life” down 52%, “Three Musketeers” and “Perfect World” both declining 48%, and “Carlito’s Way” a nose better, down 47%. Why the sudden burst of anemia? An answer might land someone a studio job with a fat paycheck. Certainly there are two easily identifiable differences between “Doubtfire” and its competitors. It’s not a sequel or remake (despite “Tootsie”) and it isn’t downbeat. Touchstone’s “Sister Act 2: Back in the Habit” debuted in third spot with $ 7 ,569,219. A position back with $ 4,018,452 was Columbia’s “Geronimo: An American Legend.” Clearly, byalmost two to one, it was comedy ahead of Western tragedy. The picture brightens slightly for the period drama when you place the two respective averages of $ 3,550 and $ 2,504 side by side. The reasons for the holiday 1993 B.O. blahs can’t be distilled and explained away with one or two salient points. It can safely be said that viewers aren’t connecting with the season’s pix as they have with releases of the last six months, and the recession sensibility doesn’t tend to cozy up to the non-upbeat during the festive season. In the limited release arena, MGM got a solid start for “Six Degrees of Separation.” It preemed in L.A. and N.Y. exclusives and finished the weekend with $ 53,058. It will expand modestly Christmas week. IRS Media added exclusives in New York and the City of Angels on its “Bank Robber” and stole $ 34,998 in 18 sites nationally. That amounted to 7-11 average of $ 1,944.