Board Thread:The Flash discussions/@comment-13895380-20160824190348/@comment-28428105-20160825020625

Future Flash is most likely faster than current Flash, but most likely not by a lot, since current Barry had help from the Speed Force getting Faster. However, RF was caught completely off guard, when he was stopped. He wasn't expecting another Flash to appear out of nowhere and friggin tackle him to the ground, and then get pummeled. So whether it's a slower and inexperienced Flash stopping RF or a more experienced and faster Flash stopping RF, either way, RF was just not prepared.