As you keep asking the same question, Fergie took over United in November when we were 19th in the league and finished the season in 11th place. Then in his first full season he finished 2nd behind Liverpool. Does this cover your 18 months period?
Fergie got lucky afterwards as he didn’t get sacked despite bad form in the league (you know maybe because of his good first almost 2 seasons at United, because of his work behind the scenes and because of his incredible and sustained success at Aberdeen), but if you just take the first 18 months then ETH actually doesn’t compare well and that is even before taking our pathetic goals scored and goal difference into account.
I am still blindly hoping he can turn it around but so far based on his time at United unfortunately absolutely nothing points towards a positive outcome.
And ETH took our very worst team ever to third in his very first year and won a trophy ending our 6 year trophy drought in the process and would have won another trophy if not for facing the best team in the world