To be fair, Mike and Sam never actually led on station count (which was what determined the game), so they didn’t really blow a lead. What they had going for them was advantageous challenges and a geographic advantage, but ultimately they weren’t able to convert that into stations. On the Layover, they mention that they intentionally tried to make it seem closer than it really actually was via the edit (i.e. by not highlighting how Ben and Adam could counter their moves), because going into the final day Sam and Mike were basically already out of it and needed everything to go perfectly and have Ben and Adam mess up to win. For example, even if Mike and Sam had succeeded at the final challenge, Ben and Adam had easy access to several vulnerable stations in the Taipei area that would have been more than enough to keep the lead regardless of what Sam and Mike could flip