The USSR was ruled as enemy number 1 precisely because it took a hard-line stance against colonialism and capitalism. The PRC, despite siding against colonialism and capitalism, ultimately is not nearly as fierce a fighter. This is the tradeoff, the "deal with the devil" that China made in order to advance socialism forward. The soviet path was not incorrect, but neither was the Chinese decision.
As for the Cultural revolution, again, it was a product of China coming from even less development than Russia had during its revolution. China absolutely relied on soviet help, no doubt exists in my mind on that, but you clearly cannot draw a 1 to 1 comparison. Without the industrialization of the economy under Mao, China would not be the industrial giant it is today.
The reason I say Mao's contributions were essential is because Mao played a similar role as Stalin, turning a post-revolutionary country into a newly industrialized one. Like the Stalin era, mistakes and excess occurred, but also like the Stalin era, such industrialization became the backbone of the future economy and brought incredible improvements to quality of life and production.