You're right - Spader was able to sell Ultron a bit more with his dialogue. I also think Enchantress had a DOPE reveal with that shot of the hand.

But I still put both films in the same category of being flawed, with issues, but still enjoyable. AOU had the added point of being a bit of a letdown after seeing Avengers and Winter Soldier while my expectations for Suicide Squad were low as heck after seeing BVS which was a steaming pile of crap. It seems like everyone else puts SS on the samv level of garbage as BVS though.