What a strange summer at the box office this has already been. Toy Story 4 easily took the weekend with a $118 million debut. This marks the highest opening in the franchise by a wide margin—topping Toy Story 3's $110.3 million—but still falls below the $122 million the movie was estimated to rake in, and well below the $140-165 million mark that Disney was originally expecting. The trend continues of big franchise tentpoles underperforming, although Toy Story 4's premiere isn't nearly as tragic as Dark Phoenix or Men in Black: International. The film'…