Couldn't say, as I have never had frostbite sauce. I just get tired of extract sauces. I was into them for a bit... just trying to get 'the hottest sauce', but then I realized that they basically just sat in my fridge, never being used. They have a bitter/metallic taste to them, and really don't compliment foods very well. With the abundance of superhots that are available now, you can get plenty of heat using fresh peppers in hot sauces without the need for weapons grade extract being added to the sauce.
For instance, I just picked up some of CaJohn's Scorpion sauce. It has a wonderful flavor, and plenty of heat. I just poured quite a bit of it on some brown rice that I was eating, and actually broke a pretty good sweat. I think once you get past some of the fresh sauces, you are sacrificing flavor for heat... and that isn't all that appealing to me.
I am sure that other opinions will differ, but that is just my $0.02, as it were.