Both BitcoinTalk and Altcoinstalk are crypto-related forums, where anything related to cryptocurrency is discussed. The two forums are completely different, currently the method of promotion in their forums is also different. As posts and activity increase at Altcoinstalks, rank increases, someone may be satisfied with your post and give you karma, but here karma is not related to promotion. On the other hand, there is no connection between the increase in rank and activity in BitcoinTalk and the increase in rank, here someone can be satisfied with your post and give merit, your rank increases based on that merit and activity.