the West. And as others have pointed out, when the West discovered Indian philosophy, they tried to understand it from the perspective they were familiar with. Can you really blame them?
As a side note, Continental Philosophy (particularly Postmodernism) has always slanted more in the direction of Eastern thought. There's a lot of attacks within the field of philosophy against many of these thinkers. Russel's critique of Hegel, Carnap's critique of Heidegger, Searle's critique of Derrida and so on. It's a particular approach to rationality and logic that is being attacked not the philosophies themselves.
"Scientific" means scientific from the perspective of modern Western science methods. 
You argue in the comments that: "Lets take vedanta. Those upanishads are not religious. They are 100% scientific." Scientific means that it follows thesyncretic statuary of Graeco-Indian Gandara.
Later, in the world spanning colonial empire of Western Europe which brought into existence scholars whose raison d'être was to understand the East, at first in Western terms, then latterly, in its own terms, to the West; this view, though was critiqued by the Christian-Palestinian scholar Edward Said, who called this form of scholarship, Orientalism; where it, rather than reflecting truthfully, the East - it's project; it represented the West, in distorted form.
It's rather like reading a historical novel of Roman Antiquity by a Londoner; and finding it, when comparing it to accounts written by those living then, of contemporary Londoners dressed in roman togas - rather like the pastiche or parody carry on up the Tiber.
To be fair; there are philosophers of the