Additionally, the Delegate Calculator's numbers are high for both candidates. The Calculator's 1413 pledged is also what CNN is showing for Obama, though other counts are lower by 5-10 delegates or somewhat higher (such as the NYT with 1,418.5). However, if you look at Hillary's numbers, the Delegate Calculator's estimate of 1255 is especially high - higher than the pledged delegate numbers from the NYT (by 4.5), AP (by 6), NBC (by 4), CNN (by 13), and CBS (by 19). In fact, I haven't seen any delegate counts giving her as much as 1255 pledged delegates, other than on Slate.

Bias? No; the outcome of an estimate-based process.