Not sure how these two stack up against each other considering they have the same cmc and loyalty, and similar ability costs, but here goes anyway:

Baltrice the Voyager
Planeswalker-Baltrice

+1: Put a 3/1 red Elemental creature token with haste and “At the beginning of the end step, sacrifice this creature” onto the battlefield.

-2: Baltrice, the Voyager deals 2 damage to each creature.

-6: You get an emblem with “If a source you control would Deal Damage, it deals double that damage instead”.

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Gideon Oppressed
Planeswalker-Gideon

+1: Tap or untap target permanent.

-1: Target creature gets +3/+3 and gains Vigilance until end of turn. Prevent all damage that would be dealt to that creature this turn.

-6: Untap each creature you control. After this main phase, there’s an additional combat phase, followed by an additional main phase.

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