It is very expected that Binance will be in the first place, but for Deribit to be in the second place, this is very surprising because it is not even among the well-known exchanges and I personally have never used it.
Anyway, it is difficult to classify exchanges accurately because some users are looking for liquidity, others are looking for reliability, some are looking for privacy, some are looking for low fees, and so on, so it is very difficult to get an accurate ranking of the best CEX exchange.