Let me start with what are the conditions to be even considered to be a super power in the first place?
There are two angles to approach this question or perhaps even three: economic power, military power and industrial power. Looking at Japan,Germany and UK, these are great economic powers. Before China surpassed them they were the respective #2, #3 and #4. Did people consider these countries to be super powers?
From the military point of view, since both Japan and Germany lost the war their military prowess have been reduced. What about UK? Did anyone consider UK to be a super military power in the late 20th century or the beginning of the 21st century? USSR or Russia today is not considered a super power despite its military capabilities.
We all know how advanced Japan, Germany and UK are including their industrial powers. Each country has its own specializations and are good at with what they are doing. These countries can make some of the finest state of the art / innovative products. Again nobody consider them to be super powers.
Needless to say meeting the requirement of western standard of having per capita income of $3000-40000 does not give you the certificate of being a super power yet many authors and people like to point the fact that China despite being the #2 biggest economy, a rising economic power who will topple the US within a decade, with a mere $3000-4000 GDP per capita China is still considered poor. So how can China be considered a super power if Western countries and Japan aren't?
Sorry people but you don't need to remind us we are still poor and we still have loads of people living in villages as if we don't know that already by now. This does not stop China to become the #1
Now going back to the question what makes a country a super power? Obviously you have to be #1 economy power with $3-40000 GDP, #1 military power with military bases over the world and #1 innovative power. So yes China is not a super power and will not be super power for a very long time based on these indicators.