Bentaleb and Mason are our most effective DM duo. Do you deny that? They might be world beaters, they might be absolute crap, but they are still our best DM duo, and the only two who have shown any ability to control the flow and direction of a game. We did not have those two today. We did not even have one of the two today. Their replacements were not nearly as good, and we ceded control of the game fairly early on until we were hanging on by our finger tips by the 70th minute.
Again, the only other option that Poch had was Lennon (in terms of immediate subs he could have made), and he wasn't a silver bullet. For better or for worse, I don't think Poch trusts a large number of our players: hell, I don't even think he's completely convinced by Stambouli, our bargain bin Schneiderlin replacement. He has few trusted options to call on to change the flow of a game, and that isn't going to change until we get the players he wants in. So blaming him is pointless, and counter-productive.