The Chinese economy was stifled from the late 1950s to 1980, so the "astronomical" rise of its economy is expected once a freer market is introduced. The only leadership here is a shift from a dogmatic approach, to a pragmatic approach. Other than that, it is building a sound infrastructure, and encouraging exports.
A similar rise could be expected of North Korea, if they ever decide to open their economy. Its location by being between two economic powerhouses, China and South Korea, is very suitable for an export economy.
It's nigh impossible to duplicate that in N.Korea, the kind of 100% track change China undertook needs a leadership that can shove aside both the objections from the old guards and the inner demon that distract you from the ultimate goal.
For one, Deng Xiaoping could do so because he was one of the last remaining big-shots who fought the civil war and within the inner circle, that's rallying prestige kind of assets. It's with such assets and grit that he could thumb down the heated argument of ideology and gave rise to the "black cat, white cat" argument that got everyone focused. But what the N.Korea got, that little fat kid? He's just an obscure prince who is on the throne because his family name, without his uncles and aunts on his side he probably couldn't rally a platoon of men, less a nation to stay functional as it is.
Next is the political atmosphere...in China even though Mao is still regarded as a quasi-deity, even the CCP have to admit he bears some responsibilities to the disasters, but in N.Korea, the 2 Kims are lord almighty and the entire ideology build upon it, to admit the Kims made mistakes in the past will bring the whole house down, so don't even think they'd do it on their own.
"Kim the 2nd" tried some reforms in his lifetime, but he was such a paranoid all efforts became half-arsed and axed not long after it was launched.
The only way to induce change in N.Korea is when their folks are so starved that hunger overpower the voices of the Big Brother, and they tear the country down themselves, or an invasion by foreign powers to smash their idols and bring their gods down to earth (much like that famous photo of General MacArthur and Emperor Hirohito)...whichever way it may be, changes in N.Korea will first require at least a 6-digit death toll.
That said, China's change also comes at a very heavy price and the scars still not fully healed to this day. Still, it's such toll that makes Chinese became pragmatic and embrace the reforms.
So no, China's experience can't be duplicated, unless you're ready to stomach the heavy price for it.