It's interesting how kids grow. I was curious and looked back at past weights of the two. The answer also makes me wonder about the statement that was made about meeting each other hundreds of time or whatever it was. Here is a quick comparison going back to 2011:
Mark Hall
2011 - 130
2012 - 152
2013 - 160/76kg
2014 - 170/84kg
2015 - 170/74kg
2016 - 170
2017 - 174
2018 - 174
Zahid Valencia
2011 - 120
2012 - 106/113/120
2013 - 126/58kg (2 wins over Nick Lee)
2014 - 132/66kg
2015 - 182/84kg
2016 - 184/84kg
2017 - 174
2018 - 174
I did see a few matches with Anthony Valencia for Mark and quite a few matches between Bo Nickal and Zahid. Bo won several of them.