Hello, I'm back, and let me illuminate you in regards to this.

Most if not all students here (as far as I can see it) are of relatively average physical strength. 

In all honesty, I think most people in here could also win against Arata cause, let's be honest, I doubt he is the brightest. 

Arata's curse only takes into account two factors. Physical strength and magical prowess. This completely rules out intelligence, tactic skills and so on. 

A brute with extreme force is dangerous, yes, but an intelligent and resourceful man is even more so. Using magic against Arata might be a bad idea due to his properties, but that means as long as it is not a purely destructive one. What ahppens when someone like Lin, who is average in strength but trained in martial arts, goes on to hit Arata with his Naturalis magic enhanced with steel? I'm plenty sure Arata would be damaged. 

Also, other types of magic can also be bad for Arata. Let's say he gets trapped in Quantus' time magic. Only his willforce will be able to get him out of there, and that won't work unless we GM's approve of it. 

All in all, Arata went through various revisions and I discussed it with Anubis a while. The finished product is someone that can go on par with most students, though I'm plenty sure the teachers could handle him with little to no problem. 

So, yes, we deemed this Arata to be nerfed enough and is which why we accepted him, just to make matters clear.