Extra Damage from the CPs make it a lot better than Heavy armor.
I picked Fractals cause Fractal BL is awesome. You could literally keep entropy mark and 6 Blights and replace the rest with just about anything and it will still sort of work.
Also, this deck was hurt a lot by the fractal nerf, more so than other decks, cause it decreases the chance for 2nd turn fractal that you had before. You have to topdeck a tower in most cases to do that, and it doesn't really happen all the time.
I also run this with 5 fractals now, 4 was too unstable.