Unfortunately? Maybe he needs to play Spiderman: Edge of Time. Seems to really be into comic books.
Actually that's a bit of a Google translate error. What he's saying there is actually that the high level of realism that it's predecessors had, suffers under the new graphical (more comic-book like) style that Skyrim has. Sounds to me like he was high, honestly. If anything, Skyrim looks a lot less fantsy and more realistic than Oblivion and about on-par with Morrowind.
I'm not German so I could be mistaken but I'm pretty sure the translation of that part is roughly this:
Wenn wir schon gerade bei dem Aussehen des Spiels sind, f?llt relativ deutlich auf, dass sich auch Skyrim dem aktuellen Trend in Richtung Comic-Look nicht widersetzen kann und zwar nicht stark, aber durchaus deutlich sichtbar in eben diese Richtung geht. Natürlich ist Skyrim nicht bunt wie ein Marvel-Comic aber irgendwie passt es nicht. Denn obwohl die Reihe schon immer in Fantasybereich angesiedelt war, wurde dennoch immer Wert auch einen relativ hohen Realismusgrad gelegt. Und eben dieser geht mit dem neuen Look etwas fl?ten, leider. Auch wenn der Punkt vielleicht etwas haarspalterisch wirkt und viele der neue Stil in keinster Weise st?rt, gibt es sicherlich den ein oder anderen Fan, den genau diese Tatsache an Skyrim st?ren wird.
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When we've only just begun playing the game, it becomes relatively clear, that even Skyrim hasn't completely missed out on the latest Comic-look trend and, though not heavily, quite clearly leans toward that style. Of course it's not as colorful as a Marvel-comic, but somehow it doesn't fit. Because even though the series has always been fantasy, the world has always been quite realistically displayed. But this has sadly been lost a bit with the new look. Even though this might sound a bit unimportant and most people won't mind the new style, some fans may be really bothered by this fact.
As I said I'm not German and don't understand it perfectly, but I think this translation covers it quite well.
EDIT:Added the German part for clarity