Why?
Deulofeu was better than Kev in the Barnsley game despite being far from fit. Which was probably why Mirallas was subbed on before him at the Spurs game but he did so little that people seem to have forgot he was even on the pitch. Tbf Gerard didn't do much better with his 6 mins in the same game but he did have a good international break which suggested he was on form whilst Kev didn't even play.
Despite being young and supposedly temperamental haven't seen Gerard sulk off down the tunnel when he is left on the bench after the last sub has been made whilst iirc Kev has done that twice already this season. A manager like Mourinho wouldn't tolerate that sort of behaviour - you'd be off the team completely. Don't think Martinez is quite that strict but perhaps he is trying to get the message across that it is a team rather than individual game and you need to wait for your chances patiently and take them when they come.
Gerard also did a very nice track back and recovery tackle vs Swansea....without getting any card so would imagine he has jumped ahead of Mirallas in the order.
No examples of Kev sulking at all. And you're actually using Mourinho as a decent example of a manager who doesn't tolerate bad behaviour? Wow.
The tackle against Swansea was stupid and a rush to the head. He'll more than play his part this season.
Also, Kev came out in the Echo last week and said 'I need to be patient'. So the message was already across, obviously.