I'd go as far as saying Oker GSD is pretty much the JA of the UK, and on the same level. In the same crews YKK XTC, and bomb together even. Not many UK heads can say they travel the world and lay shit down with the best of other countries. Dude has alot of trains under his belt too, along with decades of bombing and beef.
Bombing wise I think it'd be evenly matched if it were down to 2/3 a side. Tox, Oker, 10foot from the UK have smashed it like no-one else.
& naturally, alot of US heads won't know much about them, but still.