When you want to buy something in the market, but of course before buying that thing, you check how good the thing you are buying is or if there is something better than that thing in the market. Just like buying a product in the market, before buying a coin we think about how reliable that coin is in the market and how safe our money will be if we buy that coin or what the coin can give us in the future. Other than Bitcoin, there is probably no coin before Ethereum that is more reliable than Ethereum and that is more popular than Ethereum. Basically considering these aspects I would say Ethereum is different from other coins and Ethereum is better than other coins.