No, this is just untrue for both accounts.
- War
The PRC and RF have largely been peaceful over the last few decades, the most notable exception being, of course, the Russo-Ukrainian War. On the other hand, the West has been on an extermination campaign of genocide in Palestine, destroyed Iraq, bombed Iran, destroyed Afghanistan, supported coups all over South America and Africa, and much, much more. If you extend beyond a few decadea you also can include the attempted genocide of Korea and Vietnam.
- Quality of Life
Not only is quality of life in the PRC higher than some EU states as well as US, the EU and US both enjoy the quality of life they do because of imperialism. That's like pointing to a landlord and saying they have a higher quality of life than their tenant, and using that as a point in favor of the landlord and against the tenant. Imperialism is the reason why the Global North consumes far more of production than it creates, and what drives the Global North to sanction, coup, invade, destroy, and genocide the Global South.