Hi Slow Ciliatus,
Thank you for your message and apologies in advance, if my memory failed me. I mentioned the numbers based on my personal memory. Let's look the duration of past International Pre-Finals, based on gettertools:
2014 - 118 Days - Alliances - Statistics: Overview on ts61.travian.com - Getter-Tools
2015 - 140 Days - Alliances - Statistics: Overview on tx2.travian.com - Getter-Tools
2016 - 154 Days - Alliances - Statistics: Overview on tx2.travian.com - Getter-Tools
2017 - 117 Days - Alliances - Statistics: Overview on tx2.travian.com - Getter-Tools
For the record, as of today 4th October 2018, this International Pre-Final server has lasted 128 Days.
Based on the above, the average server duration of all past servers expect 2016, was 125 days thus 2016 server has lasted exactly 29 days more than average.
We have to point out that Graders hit on day #122 whereas Blackman hit on day #110 of their existence, so Graders advantage was 12 days of production, if not more, subject to when did they individually started producing army.
Thank you for giving the chance to go back and be a bit more accurate. Let me know your thoughts.