Jennifer Garner looks hot in skintight red leather and she can hold her own in fight scenes as well as any actor around. But sexy costumes, a fair amount of flesh, and a few well choreographed fight sequences can’t make up for the fact “Elektra” lacks heart. Sluggishly paced and devoid of the dark humor and wit that set the “Spider-Man” and “X-Men” movie franchises apart, “Elektra” manages to rise only a whisker above its “Daredevil” predecessor. And it’s not like “Daredevil” set the bar high in the first place.