In the past 30 days, Bitcoin is up 7.2% and only 5 coins have performed better than Bitcoin in fiat value change. And of those, only Litecoin has a market cap that puts in among the major coins. All other coins have lost value compared to Bitcoin. During this same time that Bitcoin is +7%, Bcash is -20%, for example.
This phase is a healthy and necessary and welcome cleansing of the market. When it completes, Bitcoin will take its next leg up in value to new ATH.