I enjoy Ultimus's posts, I am not sure why he catches so much crap on the forums. He lays out the battle with good detail and often witty pictures and comments, its entertaining. Someone always wants to chime in that "unless you beat a AV using no sheilds and only brawl then your cheating", its crazy.
I rolled up a Fire/Fire Brute after reading his posts (back when thats what he was posting) and took on a few AV's myself and I would hardly call it easy because of the build.
Fighting AV's is always a challenge, so what if he picks power builds, I would be willing to bet that most people would find AV solo fighting insanely frustrating even with those powersets. Go try to fight an AV like Silver Mantis on a MM, one slip up and your pets are toast and you will not be far behind.