With Giffen having few who can match his talent for facial expressions, Darkseid, all arrogant and smug, sneers at the reader as he orders the execution of those who oppose him. Like he's not even worried who hears his plan - he's so assured of its success.
The other thing that makes the whole thing pop - those 'Kirby' dots! Nothing says 'comics' like Kirby-dots, yet they are all too absent from today's books (or the ones I grab at least!).