Eh, 9-health Otys for 2 cards and 5 quanta? It's definitely counterable but in no ways helpful to the metagame. It just improves already-strong cards cards and decks like Firestall, Flying Titans, Graboid, Fractal, Poison, RT, and Discord while making it even harder to run the already less common decks lacking damage based CC resistance.
Heavy Armor is already balanced in Scarabows, which are occasionally used in CL. Plate Armor is underpowered, but this is not how it should be buffed. I recommend +1hp for the unupped version and no change for the upped version.