When you get these cards on "looks" they're never really about the person having a lantern jaw and piercing blue eyes. Cards can indicate strong looks or delicate, passionate or pretty, but they don't indicate that the person is a "10" on a scale of handsomeness with 1 being Quasimoto and 10 being Hugh Jackman.
What the Emperor says that whatever he looks like, when he walks into a room he commands attention. Now that likely means that's he's not going to make people go "eww!" and turn away. His looks will please the eye.
But here's the thing, the Emperor commands attention not because he's the best looking man in the room, but because he radiates power, command, confidence, self-awarness, focused ambition. So. Think of the movie star you find the most handsome in the world. He's standing right next to you. The Emperor walks in, and suddenly, you're not looking at the movie star any longer.
No matter how the Emperor compares in look to that movie star, less or more, he's the one who has you looking at him. Because he's a man, the manliest man you've ever seen. He's the general, and every other guy in the room is a subordinate by compare. They all look like they're ready to come to attention, salute him and do whatever he tells them. THAT is how he looks.