White officers could not betray anyone. They were not citizens of the Soviet Union.
The tragedy of the ROA was that Stalin and Hitler were equally terrible for a Russian. A man wants to live. But on the one hand, they drive you to the slaughter, and behind are the SMERSH officers who will shoot you. On the other hand, you find yourself in Nazi captivity and you will be starved to death in a concentration camp if you do not become a collaborationist.
With all this, you do not want to die and you know that if you surrender back to the USSR, a Soviet concentration camp is already waiting for you.
If you do not obey the Germans, you will return to the German concentration camp.
Nobody cares about your lives. ROA gave at least some hope to the Soviet prisoners of war for the future.
By the way, ROA-KONR occupies the best territory of Western Russia - there is a lot of industry and large fields for agriculture, the largest population.
Egads this is like a parody of bad propaganda.
Allow me to simplify things, the side which supported the general extermination of hundreds of millions and enacted plans for such is worse that the merely totalitarian state which doesn't inherently have those ambitions, let alone the TNO situation where the government isn't half as totalitarian and is actively fighting against a regime confirmed to have committed mass genocide on a scale heretofore unseen by mankind.
And yes they occupy some of the best territory because they.... wait for it.... sided with the Nazis in the West Russian War and pushed the WRRF out of those areas, causing irreparable damage to the front and causing it to collapse.
On a side note, I've seen enough of this "equally bad" crap to see where the argument is going.
(Inaccuracies about Soviet tactics are for a separate thread)