There could be a bit of that, although he's more of an attacking midfielder whereas Rodriguez was (allegedly) an out-and-out striker. Overall I'd say Portu is a better player than Rodriguez though.
Not at all.
He's not bad, but also unlikely to set the league on fire.
Has a decent record for Girona in La Liga - I'm not convinced he'd be a starter, but I could certainly see him as a useful squad player.