Press the Attack outperforms Lethal Tempo across the board
Judging from both how things play out in game and from all the meta-data I can find on the subject. There doesn't appear to be a single champion who does better with Lethal Tempo than they do with Press the Attack (or some other small blue floating animal related option). That includes folks like Kog, Kayle, and Vayne who one would expect to be dead-ringers for Lethal Tempo.
Not sure if that means Press the Attack is too strong or Lethal Tempo is too weak. Just an observation.
, while conditional damage is fine
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