I wouldn't say they are "so far away" as much as they used to be decently ahead and then it took them a long time to get their "10nm" process (roughly equal to the TSMC "7nm" process, neither of which actually adhere to the standard definition) rolling due to issues they had so now they are behind but it's not like they are actually as far behind as the numbers sound even though they did lose an extraordinary amount of ground overall.