The Gentlemen of the Right state: the Left’s poem is most moving. The Right’s poem, the Gentlemen of the Left state, is fine.
Shunzei’s judgement: the Left’s poem has one counting to the end of the moon’s transits through the sky, while the Right has clouds parting from a mountain peak being the poet’s thoughts given form. Both poems are elegant in configuration and diction, but the Right’s ‘even the clouds’ (kumo ni dani) does not fit with the ending. The Left maintains its connections from beginning to end. Thus, I make it the winner.