<tracing background and still making it look sketchy and not well defined
<typical realistic art style stiffness - mostly boring static poses, even the action poses are mostly straight looking with minimal tilt.
<over-detailing - Red Hood mask with all those straight lines almost looking like greeble, Red Hood' ugly room
<bad anatomy - Nightwing got bigger face than his head in profile, Nightwing body is tilting yet his torso is straight and there's no connection between it and the neck, Red Hood looking up with weird looking jaw and his facial features positioned as if he looking straight
<bad construction - see above (Nightwing' pose), usually it goes along with bad anatomy
<random shading for realistic art - best example would be Red Hood standing the room, he doesn't have a shadow under his feet and nothing in the room is shaded in the same direction
<lousy color scheme - all similar (red, yellow and bright brown) warm and bright colors, nothing to compliment or contrast and the ugly bright yellow color is distracting from seeing the big picture
<lousy compositions - Damian tilting his head where everything else is centered, Red hood' room- the left side is disgustingly busy and overdecorated while the right side quite empty with noting to parallel or continue as part of something
The assumed tracing of Iron Man helmet is the least of the problems that ugly art has.
Now let's compare and contrast to an exquisite art.
Behold first pic; the page is divided to three segments, with left and the right parts (the horses, the people and rocks) are tilting in opposite direction from each other and then you got one center piece (cactus Plastic Man) although not completely in the center of the picture. In addition to that, Plastic Man' punch being paralleled to the similar angle of the running horse below and the dust is used as filling the gap between the background horse and the stone as well surrounding the main horse in half circle. So as you can see, it's beautifully and perfectly balanced and connected composition. The color scheme is great too; it's colorful in the right amount with cold colors being in the center and warm colors on the left and right sides contrasting each other, furthermore the blue figure is being complemented by the orange stones next to is and green Plastic man cactus is being complemented by the red figure beneath it. Of course, the drawing got good construction of the figures and objects, nice cartoony anatomy and shading and also great cartoony dynamism.
Here's another page from classic Plastic man, same thing, perfectly and beautifully balanced compositions and color schemes. Even just that small panel in the middle where Plastic Man hold Wozzy from a far (Plastic man arm is paralleled to the train tracks and both are in warm colors including the sun in the middle meanwhile Woozy and the train are paralleling and in cold colors, simply gorgeous) is by far superior and appealing unlike that ugly structure-less soulless art.
P.S. Plastic Man got some really great compositions and they're easily noticeable thanks to the terrific cartoon art style.