"मैं आपसे बेहतर नाचता हूँ।"

Translation: I dance better than you.

[RanzoG]

I wonder why "behtar" is being used in so many of this examples as opposed to simply "se accha."

[ph.Mnj3bn]

Behtar's meaning is better and accha's meaning is good.... They are not similar... they are different from each other..

[RPXjaa]

More formal, perhaps.

[Carissa789117]

One sentence I will never use.

[Udbav1]

With all due respect, I dance better than you. ❤❤❤❤❤.

[KirilMladenov]

I hope you will add some grammatical notes soon, it will be very helpful. So, with comparison the construction is subject+object+'se' +adjective. Is it right?

[pK.72]

What's wrong with- I can dance better than you?

[Ashmath.]

Keep in mind, Duolingo has specific grammatical constructions in mind, so this sentence is not literally, I can dance better than you. [ In the field of linguistics, Pragmatics is one area that studies how the same effective meaning might be inferred from different constructions. ]