I doubt it will be easy. Black Adam should be able to keep The Stranger busy while Thanos and Amazo go at it. Thanos and The Stranger may win but I dont think it will be easy. "
Actually, it would be quite easy! slight missmatch! BA & Amazo especially are out of their leauge her! Thanos and Stranger are two very highly powerfull cosmic beings! I'd say Thanos himself would do well handling BA & Amazo, Stranger, who I believe might be even higher than Thanos in power (not smarter or cunning, though) and you have to very powerfull cosmic beings curbstomping some A#$!