Pentagon spokesman Col. Steve Warren said at a briefing on Wednesday that at most, only 10% of Russian strikes are hitting the terrorist group ISIS (also known as the Islamic State, ISIL, and Daesh) in Syria.---
In a report posted Thursday on its website, the [Russian Ministry of Defense] noted that its jets flew 510 combat sorties and hit 1,888 "terrorist objects" in Syria. The previous week's report claimed 464 sorties that hit a total of 1,354 "terrorist objects."---
Daily reports from the U.S. military for the same period indicate a much lower level of activity: 16 targets struck in Syria.
x ~= 12
Comment: In other words, comparing 'successful' Russian airstrikes (according to the U.S.) to U.S. airstrikes (according to the U.S.), Russia is pounding ISIS 12 times harder than the U.S. In reality, that number is probably closer to 150 times harder. That's assuming the U.S. is even remotely successful in targeting ISIS.