better than
1. More skilled or adept at something than someone else is. Oh, he's way better than me at basketball— I can hardly make a basket!
2. More than. Hey, I did better than half the work on this project—now it's your turn to do something!
better than
1. Superior to, as in He's no better than Tom at writing a memo. [9th century]
2. More than, larger in amount or greater in rate, as in My new car can do better than 100 miles an hour, or The new plan will cut better than 15 percent of costs. Some authorities consider this usage colloquial and advise that it be avoided in formal writing. [Late 1500s] Also see better half, def. 1.