While your build does kind of read like you've taken the existing Black Gate set and affixed it to a base, you've done a great job of creating an interesting compositional dynamic between the two sides. Finn did a great job on his build as well, but I think he could have been better served by staying within the LOTR universe. As such, you've got my vote! Best of luck with the other judges!
Another excellent piece Mr. Smith. It's quite accurate to the scene, as well. Although the detail that I enjoyed the most was how you kept the large dark tan area interesting. In a recent build of mine I had a similar size of dark tan, and it looks rather bland...but adding those few stones and such really help! I could certainly take note of that next I build.
And just to recap, great MOC! ;)