Who benefited the most because of the French Revolution?

Yes, peasants, and largely the middle class gained equal status to the first and second estate, (clergy and nobles) they were given the right to hold public office, freedom from heavy taxes and were no longer required to pay dues to nobles (serf type stuff) but it wasn't until Napolean that they got a democratic government, total equal rights, and other things that didn't completely come about after the death of Louis the XVI.