What is a ranking factor?
A ranking factor is considered a signal or metric that influences rankings in search engines, often Google.
Various "Ranking Factor" studies were published by companies by MOZ, Search Metrics, SEMrush and others, that all had similar flaws. They always assumed that all factors would be weighted evenly for all countries, languages, keywords.
The positioning of LRT
Christoph C. Cemper has been saying - The rules are different for every country, every language, every niche, every keyword since 2011 when we launched the CLA.