Don’t worry, I most likely won’t be posting the OC commissions. (Maybe Nyx if I tweak her a bit; but that won’t be for a while, and you don’t have to critique it if you don’t want to.)

/The thing is, the alicorns move the celestial bodies with magic, not with their own muscles. Strength only counts in the latter category, and unlike, say, Magneto and Jean Grey, we haven’t seen if the alicorns can use magic to give themselves the muscle power of the Hulk or Thor.  
I took at peek at your other things. I’m probably not going to bother critiquing the bios of the fan characters if you post them since A) I have a negative opinion of Nyx and Past Sins and both are on my hidden tag list, and B) I don’t know who the others are.

v I have more. Granted they MIGHT not be as accurate as the previous ones but a few more were made. (Also, I don’t think you would need to be an astronomer to say that the moon and sun MIGHT be rather heavy things to lift.)

>Intelligence: 5(Genius)  
I don’t think she’s that smart, since otherwise she’d have realized that her plan would’ve caused an Ice Age that would kill off most plant and animal life within a week, leaving her to rule over a frozen, empty wasteland, or maybe she was just that blinded by rage or just didn’t care? Who knows… Anyway, I’d go with a 3 or 4.  
>Strength: 7(Over 100 tons)  
Like with Celestia, I don’t agree with this. I’d lower it to 4.  
>Speed: 7(Faster then Light/Teleport)  
No problem here. Her normal speed should be a 3(anything higher and she would have stopped Twilight from reaching the Elements during their confrontation easily).  
>Stamina: 6(Superhuman)  
For once I might agree with this, since turning into gas pretty much makes you bulletproof AND means she could probably heal quickly… Not to mention that apparently the only thing that could stop her were the Elements of Harmony.  
>Energy Projection: 6(Multiple forms of Energy)  
Magic and transforming her body, this works.  
>Fighting Ability: 4(Experienced Fighter)  
Much like the other two alicorns, I can’t be entirely sure, but I’d lower it to 3 just to be conservative, and there’s not of a point of her learning karate if she can just zap enemies with magic or whatever.
 
So OP, since you’ve almost done every character worth making an MvC3 bio for, will you be doing movesets and Hyper Combos next?