IMO what he's playing doesn't sound like Marcus very much at all, it's more about his tone. Oh and how he holds his hands over the bass. Not much else!
He honestly just sounds like a smooth jazz bass player with an ash j bass with 70's pickup spacing... There are a TON of these guys around. As Marcus is one of the fathers of the "smooth jazz bass tone" there are naturally going to be "clones"
I guarantee if he was playing an MTD there would be no issue!
His tone is the exact reason why im not really enamoured of the prototypical 70's style jazz bass tone, a tone which seems to be lauded in some bass circles as THE tone to have.
To my ears this clip provides an example of what i consider to be the complete antithesis of good bass tone...i.e. twangy, clanky, tinny and very thin sounding.
IMO 60's (different bridge p/up position) J basses sound much better.
And I agree, this guy's not strictly a Marcus Miller clone...hes simply a clone of a most guys who came up during the 70's and play in that style (there's a million of 'em), a period which tended to spawn a lot of players who were either coming from the jaco camp or the larry graham camp or derivatives thereof.
Heck, with the exception of a very few, most of us are really clones to one degree or another. Even Marcus Miller is a clone to some extent...To my ears he's just a jazzier, more melodic, more pop oriented Larry Graham ( Marcus is an awesome player but i tend to dislike his tone ...it just aint my thing).
I say that it is fine to try and emulate your favorite players...in a way its the highest form of respect, especially if your rhythmic sensibilities lead you in that direction.

