if you have big amount of token
if this happens this can be done on one exchange like MEW this wallet can accommodate a lot of toke there to send
Think so, but what if that is a new token that need to transfer on a specific exchanges? If you transfer it in different account and withdrawing in different online, it cause a lot of transaction fee and consuming so much time. That's why I said before, if that is not so much ( your token ), its better to trade it all at once. That is what I'm trying to say...