Why would you assume the troll army is trying to make "Russia" look good? It's far more likely they would focus on individual goals like keeping the US out of Ukraine. Or making us look bad on the international stage to other countries. They don't need to look good, they just need us to look bad. Putin isn't an idiot, no amount of propaganda is going to change the fact that some of what happens in Russia will never be accepted by the rest of the world. He just needs to look better than the alternative. It's far easier to make us look bad than himself look good.
This completely misses the point of what the troll army is there to do. It isn't aiming at convincing people of a point of view, but confusing the audience. You should read this story from 2015: http://www.bbc.com/news/world-europe-31962644
Consider how it is compatible with the existence of Putin's troll army.
At the very least try to imagine the relative scale of money/power involved in the propaganda in the West compared to the rest of the world. (for reference, check military spendings)