Didn't say LMA would average 45/25 and singlehandely destroy a great team.
I said that LMA in the playoffs can unhinge GS's biggest asset, its defense, by neutralizing Bogut and their entire interior (for a similar effect, look what Tony Parker did to Miami just last year. There's no stat for putting a team defense in a blender). We've already seen how GS is without Bogut. They need him on the court for offense and defense now. If he's out with foul trouble, for becoming a liability, etc - GS is a different team. That's why Portland is a bad matchup.
You think your team is going 16-0 or something?
Every team has someone they need to watch out for.