I'm a Flash guy, but thought 1. Arrow, 2. Flash, 3. DCThought that ep was a tad naff actually.
The crossover ended up all over the place.
Best ep of the 4 was the Flash.
Loved this though -
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DC didn't give enough out of their own cast. But it was ok.
I guess the interesting part is Stein and Consequences. you know there will be consequences.