I don’t think they’re comparable. Neither of those three manage clubs that have the prestige or spending power that United does.
Conte is also having a nightmare season. He has lost the players and has mentally checked out. Tottenham have been playing home games this season at a stadium they’re notoriously bad at + look at their budget. One of the players on your bench tonight probably cost more than their starting XI. Liverpool have an inferior squad to United so five points is about right. They also lost their best player mid season (whilst you guys picked up Sanchez) and their midfield, defence and depth is bang average.
United have underachieved with their squad this season. I don’t know how you can spin it any other way. If you’re happy with where you sit right now because of Chelsea, Tottenham and Liverpool, then your standards have tapered. You need to look at the team above you to get a better understanding of where you’re really at.