No pics, but I've had both. I like the Battle Rat better.
The SR-101 definitely holds it's edge longer. There's a significant difference just chopping wood. The DF will still chop when it dulls some, but the finer edge is lost. This doesn't happen so quickly with the BR, it takes a lot more punishment to dull it. SR-101 rocks. :thumbup:
Another thing is the overall feel between the two. I like the balance of the BR better. I had the CG version of the DF, and I've heard that the LE has better balance. If you're looking for just a chopper, then the tip-heavy feel of the DFCG is great. But the BR chops just fine, and feels like you can do a lot more things with it that a smaller knife can do, as well.
The BR was the first knife I ever bought from Swamp Rat, and before any Busse Combat knives, so that might sway my judgement some. I still have it and use it, too. My DFs are with somebody else now.