I Submit for your Perusal ....

[Shougun]

For anything level 15 and above, sure. Give it a serious try until you know that someone in the group is beyond hope. But we are talking about a fight where the new guy can't even understand what he is doing wrong, because he hasn't acquired the "right" moves yet. The only advice you can give the new guy is "you can't do your job properly yet, so just hit stuff quickly with the rest of us".

Are you sure they sync you to level 11 now? For a Gladiator it can be a moment to learn pulling groups before actually doing dungeons (and what your hp can do on larger pulls). I remember when I did my warrior I had overpower, and it was helpful to get situated in that guildhest. Of course I didn't need it (not new to games, or MMOs), but Yoshida's general mantra is early stuff is to help the super super new to games.

Edit:

I still don't understand why they changed that fight. Sure, level 12 made the fight too quick to slam through, but rather than dropping marauder to a level where they can't use a basic move, why didn't they buff the mobs UP one level.

That doesn't make any sense lol. I mean what SE did, your point is excellent and SE should change that if it's true.