This is a discussion on Is Cross-Play available for local co op? within the PlayStation All-Stars Battle Royale forum, part of the P; Can I play locally with my PS Vita against my family on the PS3?...
Sly I don't know if this will work but you could try and see if All-Stars supports the cross controller option of remote play. I know it only works with a limited number of games but you might get lucky.
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