They're different. The swedish mil firesteel dwarfs the CountyComm one, both in girth and length. I can't really comment on how "hot" the CountyComm one is other than to say that the swedish one *seems* hotter to me. I'm not sure how much of that is the chemical makeup of the ferrocium or the added length.
If size is of concern, then by all means check out the CountyComm one, if not, go Swedish.
*BTW one nice feature of the CountyComm one is that the rod is coated in some sort of resinous plastic so that it will store longer without corroding. A plus if you just want to throw it in a kit and foget about it.
Here's a pic I took for ya