First we should keep out EU from superpower category if you are talking in military might. Economically too EU is much depended on US. As far as economy and market is concerned combine India, China, Japan and South Korea, you get around 40% of world economy in these particular region. As a whole, as of now whole of Asia is an emerging and biggest economy. NATO in itself is there for military and strategic issues. If not for Cold war era, NATO would not have been there. Moreover its basically US who is calling the shots in NATO rather then EU. But in case of SCO its economy and strategic issue both which is acting as bonding agent.Let's brief current superpowers.
USA
EU
Russia
China
Russia and China made SCO and US-EU made NATO, creating two poles.
India will reach at level of these countries in 2025-30.
Which club we must join then? What do you think?
We must make coalition with NATO or
We must join SCO or we must nulify SCO by strengthening RIC(Russia China India) alliance?
If you separate US from NATO, EU would be at loss. So showing inclination towards NATO would be not beneficial for India if geo political scenario change tomorrow. Right now I think whole of EU is in turmoil due to manifold increase in fanaticism. On the other hand too much inclination towards SCO too would not be beneficial for India as China would not be going to favour India in front of its regional hegemony.
So I think India should look for benefit on both the side. US could be a good strategic partner along with Russia for regional growth. Whereas China and EU is beneficial for India in terms of economic growth. As of now, we should have our eyes on erstwhile Japan and Oceana along with African nations. We have to give priority to our economy right now to counter Chinese influence in the region. Along with it we have to increase our strategic presence and influence in South Asian region.
All these could be achieved by implementing a carefully orchestrated diplomacy along with some passive aggressive posture in near future. One cant be counted as a super power if its in shade of another super power. You have to stand up and wriggle your way out of this bipolar or tripolar strategy and make your own strategy to succeed.