Don't remember which year that was that Poltoranin skied up the Alpe so well, but a race that was really suspicious to me was the 50km in Korea. Poltoranin blew up, from skiing with Niskanen to ending in what was it, 15, 16th place. Exactly a year later, he is caught up in a doping ring. I heard he confessed to having worked with Schmidt and doped, but even without the events of last year, I would have wondered at how Niskanen just drove away like that. Sure, Niskanen didn't change his skis when everyone else did earlier, and Bolshunov catching him was partly due to having a fresh pair of skis, but nobody else went with the pace. Niskanen was driving hard from the point he went into the lead. I question the results of both men in that race. The big gap to the chasing pack was due in part to cat-and-mouse tactics of the chasers when they realized it was hopeless to try to catch the two (and before Poltoranin blew up, three) men up front. Bolshunov skied away from the pack to catch Poltoranin, who was fading by then, and Niskanen, who was still looking very strong, just was on less than fresh skis.
Going back to today, yeah, from the camera angles I thought it was Melnichenko up there skiing with Ustiugov, and that would have been less surprising, he is a smaller, lighter skier that skis technically very well, had the third fastest time in last year's final stage and who I thought would be, along with Spitsov, the Russian(s) who could challenge the two Norwegians, but definitely the team tactics prevented him from doing that, IMO.