It doesn't effect any other coin bcoz Bitcoin is at the top from so many years and it can't be beaten
The difference in there values gives the answer...
in my opinion, bitcoin affects other coins is the price of bitcoin that always goes down which affects other coin coins.
Yes, because bitcoin is the basis of market price, of bitcoin is down then the market is down too. This is the reason why a lot of us is hoping for the bitcoin to rise again.