Believe so that been said both flat beds
I guess it comes down to crew I would go with LAN Peru as they are quite good crews,
then it comes down better terminal experience in MAD I would assume Iberia to win here?

Plane I would think A346 would be better as further from the engines and the novelty factor for there are not a lot of operators of this type

So in summary if you have not been on LAN go with them if you have then go with IB for a different experience