I wasn't a fan of Watson either so its not a vendetta against MM, just the policy of hoping with selecting guys like MM, Shane Watson, Hilton Cartwright that we will find a allrounder like Ben Stokes, Jacques Kallis or Andrew Flintoff.
They don't come up too often players like them
Interesting choice of players to compare him to, as an all rounder Kallis is in a league of his own, I would go as far as saying if I were asked to pick an all time 11 Kallis would be the first name on paper with Bradman number 2.
I was never a fan of Watsons until late in his carer when I started looking at his figures and comparing them to some of the players people talk about as great all rounders.
Heres some stats for you
Batting averages
Test Watson 35, Stokes 33, Flintoff 31
ODI Watson 40, Flintoff 32, Stokes 29
T20 Watson 29, Stokes 13, Flintoff 12
No contest as to who was the best batsman
Bowling averages
Test Flintoff 32, Watson 33, Stokes 34
ODI Flintiff 24, Watson 31, Stokes 38
T20 Watson 24, Flintoff 32, Stokes 49
Flintoff might have a slight edge as a bowler, my criteria for an all rounder is pretty simple, average more with the bat than ball regardless of if you are a batting or bowling all rounder. Watson is the only one to do it in all three formats and the difference between his batting and bowling average is better in every format than Flintoff.
With Kallis out of the equation Watson is one of the best all rounders of the last 40-50 years, compare his figures against the likes of Botham, Haddle, Kahn etc and he is right there with them.
I would still pick Watson at his current age ahead of MM.