The Russian Technical Regimen for the Piano presents instructions and exercises that were used in all special music schools in the former Soviet Union. This includes Russia, Ukraine, Georgia, Azerbaijan, etc. Students were practicing and mastering the same exercises for "technique" exams of different levels.
While true, this is only one part. In the end of the day, it is not about "what", but about "how". Presentation in such mechanical way (esp. followed by Chopin Op.25 no.12, which was performed without any sense of melody, its shaping and phrasing) is precisely why I have difficulty to call it "Russian".
On the other hand, later I listened to your Scriabin Etude and Chopin Op.10 no.5 and actually enjoyed those very much--lots of musicality and subtleties!
Leschetizky's teaching methods became the foundation of the Russian Piano School. I hope this will clarify unnecessary confusion.
Sorry, this statement is incorrect and creates even more confusion.
The Russian Piano School phenomenon was a mixture and fusion of many different schools on a strong nationalistic, cultural, and political background. While Leschetizky had an important impact on Russian School, by no means one could even remotely call it "the foundation of the Russian Piano School".
Hope it helps.
Best, M