Zt 200 weight is 7.7 Oz benchmade weight is 7.7 0z as well, Just googled both knives. It looks like both knives are gonna be pretty close when it comes to the specs
I know you asked for thickness but i was just gonna add in the weight part. As far as quality goes either one is gonna be tough as nails, but consider this benchmade you get the D2 tool, and zt you get 154cm, D2 is gonna be harder to sharpen, but benchmade has the option for a blade replacement if you ever damage your knife or break the tip you pay i believe 30-35 bucks for a new blade. If i was gonna chose between the 2 I would chose the one that i could get a new blade for, Because It being a "hard use knife", I'm gonna use it hard and not hold anything back, because if i break it I can get it fixed. Kinda off topic just throwing this in for you.