"There is no such thing as best Russian air defense system". I agree. There is no such thing as best US air defence system either. Do you have any claim do support that US has better "air defence solutions" than Russia or China. I can show you many examples where the "so called best air defence solution" of the USA has failed.
"In January 2018 the U.S. military tested its Aegis Ashore land based ballistic missile defence system off the Hawaiian coast. The military launched an SM-3 missile to intercept a mock incoming missile, but failed to intercept the target".
"The failure of the SM-3 comes in the wake of a previous failed test in July 2017, and shows that the Aegis system remains far from operationally ready. The failed test came just weeks after the failure of the Patriot, supposedly the most reliable of U.S. missile defence systems and the only one having undergone combat testing, to intercept an extremely basic Yemeni missile fired by Yemen's Ansurallah coalition forces over Saudi airspace. Whether the United States will be able to develop more reliable missile defence systems in future remains to be seen, but the country has been struggling with the poor reliabilty of its systems for several decades ever since the Gulf War of 1991"