Choosing which one to drive isn't as hard as one would think.
The 11 has 8878.4 miles on it, the 14 has 845.4......so the 14 is the go to car.
.
As far as which one is faster, based on the June 2014 dyno of the 11, 776rwhp, it's within 4 hp of the 14.
The 11 has track rubber & wheels, ( that doesn't fit the 14 ), which should make it lighter, in theory faster !
.
I been riding my 2000 HD Wide Glide with over 93,000 miles on it mostly. Or driving my "smoking" fast 1998 Saturn SL2 with 115k on it. I too have a difficult time deciding which to take to work.
It feels somewhat akin to torture waiting for my 2015 Mustang V6 to get here!