But you never made any mention of how competent Otamendi is as a RB, or how good Maffeo is? Your entire arguament was about how he was an experienced international and therefore better than an untried 18 year old?
You're talking utter bollocks tbh mate. The only debate is who is the better RB and who is likely to play better at RB if called upon, yet you seem oblivious to this. The fact that you "wouldn't even consider" Maffeo shows what utter bollocks you're spouting. Anyone who would pick one player over another without even considering how good the two players are is just bizarre.
My argument is pretty simple. It has been from the start.
Your asking who is the better RB. One has never played RB and the other is 18.
Given the experience of Otamendi then that makes him a safer bet as a RB. Otamendi is a defender, so let's not be throwing Aguero into the mix as some sort of counter argument. If that was the case then of course you would use Maffeo.
I'll answer your question.
Who is the safer bet at RB?
For the reasons I've already detailed. Otamendi, every single time.