Okay let's talk about the quality
Bitcoin talk consists of a lot of different quality posts because of the merit system to filter out the quality and shit post.
Crypto talk is full of shit posts but still the moderator of that forum doing their best to become a quality forum.
Number of members
AFAIK the bitcoin talk is the winner on this.
Bitcoin talk - Post to learn
Crypto talk - post to earn.
This is just my personal opinion and personal perspective only.
I don't agree to this because you cannot earn much from crypto talk. At the beginning they were paying satoshi for pay per post but later they discontinue this and give only some token from the yobit exchange. I don't know what are they paying now because i have not visited that forum for the last few months.
For me, that forum is full of spam post and you can learn nothing from there. Those who are free and have lot of spare time can earn few cents from there but for me its waste of time.