You can enable Einstein Analytics in a scratch org (as opposed to a dev org) by setting features in your scratch org definition file.
Einstein-related features you can turn on include
It looks like DevelopmentWave is ...
ProductLinkSplit.At2Split/At0 is formula.
If you'd like to compare something in if statement you need to save the variable in product catalogue as new attribute. According to https://help.salesforce.com/articleView?id=mc_pb_ampscript_functions_for_email_recommendations.htm&type=5
Operators where A and B can be a:
product attribute or ...