To answer the question, we have to know what an Aikidoka is. But is that so easy? You have to first define "Aikido," and there are going to be a lot of different opinions on that.
To me, it's like asking how are football players different? You might have one guy saying they are good kickers and another disagreeing and saying they are good at throwing and catching the ball. This argument will continue on until they realize one guy is from the U.K. and the other is from the U.S. This is what happens in half the threads here.