XXL is the next scaled size up from XL (girth, sleeves, length, etc...). 2XL is the same dimensions as XL in all lengths and a little more girth. See the related link below for a great article that gives indepth explanation on the differences and how to find the best fit for you.
XL stands for eXtra Large while XL stands for eXtra Large and Tall. Therefore 2XL means eXtra eXtra large (XXL or 2Xl) and eXtra eXtra large and tall (XXLT or 2XlT). The difference in these two sizes are the height of the shirt, 2XLT is taller than 2XL.
Size 14 is usually just an XL
The size 2 XL in ladies transfers to a 1 XL in women's sizes. This will transfer to an XL in men's sizes.
The 2002 GMC Yukon-XL has 65.2 in. of front shoulder room.
The 2014 GMC Yukon-XL has 65.2 in. of rear shoulder room.
The 2011 GMC Yukon-XL has 65.2 in. of rear shoulder room.
The 2006 GMC Yukon-XL has 65.1 in. of rear shoulder room.
The 2004 GMC Yukon-XL has 65.2 in. of front shoulder room.
The 2009 GMC Yukon-XL has 65.3 in. of front shoulder room.
The 2013 GMC Yukon-XL has 65.2 in. of front shoulder room.
The 2014 GMC Yukon-XL has 65.2 in. of front shoulder room.