Grammar Tips

as good or better than, as great or greater than

This structure, called dual comparison, is idiomatic, at least at Conversational levels and in their written representations, but Edited English avoids it because it is often criticized for its faulty parallelism. In His second novel is as good or better than his first, good needs as, notthan, for both parts of this dual comparison to be parallel: as good as or better than. Or you may change it to His second novel is as good as his first or better. Particularly in longer sentences, punctuation gets more complicated when you restore the as: He is as handsome and well-mannered as, or even handsomer and better-mannered than, his older brother. Kenneth G. Wilson (1923–).  The Columbia Guide to Standard American English.  1993.