And yet, the added stats to Morph were at least partially because a lot of people were begging for Morphling buffs. And the question is - was he fine then and made overpowered because of clueless people, or is he fine now and about to be made too weak because of clueless people? I'm inclined to think of the latter, I'm fairly sure that with some time players on all levels would get better at dealing with him. You could look at Anti-Mage at high level games - players started putting pressure on him and he went from being first ban/pick to a rare pick and now he's in every other game again.
I'm not entirely sure if I agree if the stats in Morph are a huge deal though, and while I might be mistaken I seem to recall that even prior to that there were 2 popular builds in China for Morphling - One with a very early BKB and one with a very early Ethereal Blade.