Here is how I see things and why I'm not kind with Mourinho.
We all agree on the fact that LVG wasn't given a good situation but we all concluded that his job was below par and personally my gripe was almost exclusively regarding the terrible level of entertainment, the results were alright considering the starting point, his poor transfer business are perfectly normal for him, he has always been terrible in that department which is why I blamed the club for not bringing someone to oversee the head coach.
Now, when you sack LVG you do it because of the results, the level of performances or both during his first year Mourinho's results have been in my opinion comparable to LVG's, at some point one has to be serious, Zorya, Anderlecht, ASSE and I don't know who else are terrible teams, it's nice to have the cup but the competition was terrible, in the league Mourinho had 3 more points and again the excuse of the EL is a poor one, our opponents in EL were terrible. And in general it was a borefest.
To me LVG and Mourinho have had the same type of career at United, the difference being that Mourinho is in my opinion good on the transfer market which gives him more leeway but I can't understand anyone that tries to pretend that Mourinho deserves more time or stronger support, he does not, on the field he hasn't done a good job, he is below par, the only difference is that he doesn't hurt the club with his transfer dealings. If Mourinho was our DOF, I would be okay with his job but he isn't.
I don't want to see him leave the club but I expect a steady improvement and not something based on spending 400m€.