I wouldn't go that far. Compare Galchenyuk and Seguin. The latter was putting up damn good numbers and practically forced Boston to either put him at center or make a trade. Galchenyuk isn't there yet (and may never be), even if he would benefit from not having DD in his way.
That's a pretty reasonnable assessment. The only thing I would add to play the devils' advocate is that Boston had a better all around lineup.