I understand the OP's point. He's essentially pointing out that what we generally conceive of as great individual play doesn't always encompass everything. Garnett hasn't scored much this series, but he has surgically removed Lewis from the game. He hasn't minimized him, he's freakin cauterized him.
If Lewis were averaging 16 and 5 with KG averaging 20 and 10, more people would support the notion that KG might be the MVP of this series thus far. Instead, Lewis is averaging 6 and 5 to KG's 10 and 10. Same net difference in scoring, he's just doing it with his defense instead of his offense.
:Shrugs: It's too early yet to really have an MPV in this series. But I see the OP's point...KG, like Pierce, like Rondo, etc. have all been getting their particular jobs done in a major way this series. If one's job is to take the lead as a scorer, the other to set the table, and the other to lock the defense...as long as they do the jobs to this level, I'm a happy man.