you know twilight, I think you're one of the cutest ponies in all of equestria. almost as adorable as fluttershy or marble pie combined. I know somepony like you would usually just deny it like it's nothing, but still, you are just too cute. especially when you read your books or study. or use your magic to levitate things. you are adorable!
You sure feel strongly about this. I certainly won’t deny it, as it’s not my place to tell you how to feel. Well, unless you were claiming it’s an objective fact, in which case I would demand to see your research data and methodology. However, I don’t know about too cute, what does that entail? So cute as to cause disruptions in public spaces? Because I don’t really do that.
While I do accept compliments, I would prefer if you didn’t single out others as examples of inferior cases. It’s unnecessary and can be hurtful to those ponies. It’s not like we entered a contest, that they somehow agreed to be judged in such a fashion. Making somepony else feel worse about themselves won’t make me feel better.
Besides, using a comparison to express the value of something isn’t meaningful unless the value of that which it is compared to is known. And since I can’t know how cute you find the ponies mentioned, it does not tell me how cute you find me. Really, the letter is better off with the comparison omitted.