I think if you add up the dividends that you got during this time, LAACZ will beat GLD
Distributions were
2009 - $42
2010 - $46
2011 - $47
2012 - $47
2013 - $56
2014 - $65
2015 - $80
2016 - $80
2017 - $81
2018 - $85.50
2019 - $93.50
2020 - $25 or $50
$748 to $773 in total distributions during this period. This adds 56% in returns. If you bought more units, this figures will likely be higher over time. You get income versus no income for GLD. Total return would have been roughly 110% versus roughly 100% for GLD from 9/1/2008.
LAACZ
9/1/2008 6/30/2009 7/1/2010 7/1/2011 6/30/2012 6/30/2013 6/30/2014 6/30/2015 6/29/2016 6/29/2017 6/29/2018 6/29/2019 6/15/2020
-1345 42 46 47 47 56 65 80 80 81 85.5 93.5 2075
7.5%
GLD
9/1/2008 6/15/2020
-79.2 162.6
6.3%
If we use a starting point of 2009 after Laacz traded down significantly and GLD has traded up after the market low of March 2009
7/1/2009 6/15/2020
-92.4 162.6
5.3%
7/1/2009 9/30/2009 10/1/2010 10/1/2011 9/30/2012 9/30/2013 9/30/2014 9/30/2015 9/29/2016 9/29/2017 9/29/2018 9/29/2019 6/15/2020
-930 21 46 47 47 56 65 80 80 81 85.5 93.5 2075
12.5%