It'll take more than just having a marginally bigger economy than the US to be a world's superpower once China just passes the US economy. Last year, the US alone accounted for over 35% of the world's military spending compared to China's 10%!

Here's a hint: Maybe because they don't spend trillions of dollars on useless, pointless wars, and ridiculously bloated "defense" spending? Just a thought.

If that offends you I'm sorry.

I just really don't like the CCP. Tiananmen Square, Tibet, totalitarian suppression of freedom of speech/expression, etc.

China has a long way to go before it can be considered a superpower. China is well behind the West in terms of a rich middle class, a large amount of people live in poverty, and a majority live under $5 a day and China is surrounded by rival countries including countries which China had wars with in the last 70 years, including India, Japan and Vietnam. The United States, the UK and the Soviet Union (to a lesser degree) also have had a massive cultural impact on the world which was a proof of their hegemony. So raw GDP doesn't mean much on it's own.

No it doesnt offend me, its just the stuff I would say about my dislike of the US that would offend others. I can totally see where your coming from. AUSTRALIA SHOULD BE THE WORLD'S SUPERPOWER!!! =P Well maybe not with our current government, or the one thats not in power... Australian politics sucks -_-

US growth is well below 3% and China is well above 6%. Current estimates put China passing the US in the 2020-2025 timeframe if current rates are maintained. Chinas growth would have to slow by 30-50% while the US picks up significantly in the next few years for it to take until 2033

Oh God, the thought of Australia as a superpower under the current government is scary as hell, haha.

And yeah, there's a lot I could criticise about the US too. But hey, I trust them more than the CCP...

While I do agree that his numbers are not an accurate representation of the GDP growth of each respective country, your statement that US growth is "well below" 3% is misleading.  US GPD growth is at approximately 2%.  Also, China's GDP growth rate isn't all that much higher than 6% as well, it having dropped since 2010 from around 10% to a little under 8% 

http://data.worldbank.org/indicator/NY.GDP.MKTP.KD.ZG

I'm sure you can see that China already is showing signs of not being able to sustain its current level of growth.

2% vs 3% is a massive difference as is 7.7 vs 6%. these are not small differences. The US needs a 50% increase in growth rate to reach 3% China needs a >20% drop to reach 6%. given the compounding effects the actual requirements for his estimate to come true require china to drop well below 6% and the US to climb well above 3%. 2033 would require an amazing economic turnaround from the US and massive slowdown from China.

I don't think you understand this very well if you think that it's "massive" of a difference.  You do realize that the variance in the annual GDP growth rate is common to be around 1%, which is the amount you're calling "massive."  Are you saying that all economies fluctuate greatly all the time?  Since it's relative, and most countries actually fluctuate MORE than just 1% year on year, it's not all that massive at all.  

edit: Also, it's not all that unbelievable to think that China would experience a significant slowdown (moreso than US "amazing turnaround" given that the US GDP growth rate would take a lot to move up or down that much meaning it would likely remain at 2% with occasional fluctuations in either direction).