Testing out how abusive the new pillaging is and I had three cities set up to do a revolt, pillage, recapture, repair and repeat cycle. My actual research was low, but with pillaging I had 40 techs researched around 1750 BC. I wasn't really paying attention to the computer players since I had around 50 units and another 40 to 50 builders, but then I noticed the Sumerians we two techs ahead of me. I checked their research and they were pumping out about 90 a turn, while I must have been averaging with pillaging 15 to 20 times that amount. I started to test it and regardless of how fast or slow I researched something they always stayed 1 or 2 techs ahead. If I skipped a round of pillaging they didn't advance. Even when I managed to research 6 techs in one turn they still stayed ahead of me.