Well if you had a model of the HMS Dreadnought that you built sitting on your wall right next to it, I don't think you'd be going around telling everyone the Arizona looks "fairly similar" to the HMS Dreadnought...
Let's see here...
Armament/Guns:
USS Arizona...
4 centerline triple-mount turrets... superfiring
HMS Dreadnought...
4 centerline dual-mount turrets (non-superfiring) and 2 dual-mount wing turrets
(that's four tripple turrets in a straight line as opposed to six dual turrets center and wing)
Silhouette/Shape:
USS Arizona...
Single smokestack, two large gun control towers
HMS Dreadnought...
Dual smokestacks, one largegun control tower
Meh... they look just alike!
It would take a lot of work (kinda like completely redoing the entire model from scratch) to get the Dreadnought to look like the Arizona.