WOW! Bold predictions Geo, Liverpool v Chelsea will be IMO a very dull game, I think both managers will be happy to sneak a 1- 0 win. We know Rafa will aim to keep it compact and not concede and try and spike one on the accounter, on the other hand I think Grant will do the same thing.
To say Man U will win the tie by 2 - 3 goals again this is fantasy, Man U are a fantastic team and so too are Barca, if all the big game players turn up this will be one hell of a battle and if it comes down to best players then Barca win, unfortunately Barca haven't fired on all cyllinders this season and for that reason I think Man U will sneak through but I don't think there will be a 3 goal margin.
Only my opinion mate, based on the matches I have watched this year (and I haven't missed many)...........mind you maybe it's the effects of signing up to the Bandit school of punditry

Let's wait and see.
Edit: Having watched the poor performance by Rangers last night and still getting a 2 goal win, I think a 2-3 goal margin for Man Utd is not unrealistic
Geo.