It's not the first dex who acts like centralized exchange site. Binance dex is the first one who is operating very similarly to the centralized exchange site. If you are making a comparison between both of this dex and you will know the difference. Even binance dex that was having very big popularity is having really small volume right now.
nika doesn't have volume and kyber is the only ethereum dex is solving this problem and you must know the differences.
There was only one exchange site who has been getting more and more volume and that's only kyber dex.