You don't understand geopolitics. Russia need the money and lock China in Russia weapons system back in 2010.
Regarding weaponry. Tu-22M only good at speed. but what's for? Nowadays bomber attack outside of the threat engagement zones, when you fly faster, radius of turning circle is bigger, which means you have to attack even further, otherwise your bomber is not safe.
H-6 can carry 6 cruise missiles, while TU-22M is variable-sweep wing, hardpoints are very limited. also carry 6 cruise missiles.
variable-sweep wing is expensive, hard to maintain.
Super-sonic bomber is expensive, hard to maintain as well.
China is not India, we have long vision, we don't need Bling Bling.