The thing is reality bending is poorly defined. In MoM Strange turned a glass of water into wine. Is that reality bending? I mean he took something and made it into something else.
These are magic characters and the entire point of magic is accomplishing things that shouldn't logically be possible.
You would first have to actually define what exactly the difference is between reality bending and just magic spells and where one ends and the other begins.
Have you ever heard of Dragon Ball? People who can destroy universes at this point and still they always find a worthy challenge. Granted it's an extreme example but a valid one nonetheless