Ugh, what? Dzyuba's biggest quality is his ability to elevate his game under pressure and when he's challenged, we've seen that in the CL, biggest RPL games and now in the World Cup. Sure, he'll play best when he feels the coach's trust, but I don't think his mental ability is his downside at all.
If you want to see a waste of talent, it's Smolov, who can kiss a goodbye to all the superlub invitations he wanted to have. Absolutely useless in the 1st game, then is sent to the field in the 80th minutes and just walks around. What an outsider on this team.