There are many similarities. The main difference is that one is a bit longer, and the other one is a bit shorter. Hard to say how much, but if I had to guess I might say 4.5 inches. Some of you might be thinking that four and a half inches is HUGE, but trust me, it's pretty small.
You will notice the weight of different barrel profiles more than the length of the different barrels. I have a slender old 18.5 wingmaster barrel that is drastically lighter than my Dlask 14. When I pick them up to compare the small difference in length doesn't jump out at me but the heft sure does.