Hmm, that is what everyone has been saying since before day 1 and here we are 2 1/2 years later. If we look at history even briefly we can see examples of small nations repulsing superpowers after it seemed like they would go under. I think the most likely outcome is a continued slog more than any decisive victory. Those gains you mention are tiny and have come at great cost and every kilometer deeper into Ukraine they go their logistics and strategic position gets more difficult. I'm not confident in any predictions at this point.