More like 8/10 times, and that's based on luck, for unskilled BLMs. Now, if you're a skilled BLM that is any good at kiting, I'd say maybe more like 4-7/10, depending on circumstances and how good your tank is. But what would you know about being a skilled BLM? Or a good tank at that!
I'm not sure if that deserves a zing or not, I'll let the general QCDN audience opinionate. Although, if I let that happen, chances are I'll have a few Uzors, Pchans, and Mdkusers saying that it doesn't, so nevermind.