I have purchased this with DB coin on 3 toons. On one of my toons, it run slower than the other two. wtf?
If you bought the horse before the May 15 patch it was the faster Chain speed. On May 15 it was patched to Silk speed.
Awesome. Confidence in my gaming experience. So, wasted DB coin because my box can't keep up with my main.
You should petition to have the chain speed on your silk bridle lowered to what it should have been. Your toons will run the same speed then
If you have a higher speed Heirloom bridle you could allow the slow toon to use it so that his velocity is raised and then give it back to the original toon.
Just lead with the box that way all your toons stay together. As others have pointed out the faster versions were an error that got fixed, be happy they still got to keep the faster speed out of it.