<1. 200-300 nukes vs 5000, who loses? and who gets injured but gets back up?>
Where did you get the info that China has 200-300 nukes (this is what's published but with caveat)? The fact is no one knows how many nukes China has.
You can calculate the devastation of 300 x 5mt nukes and 5000 nukes is overkill.
<That they started comparing itself with mighty USAF?>
Only Indians would consider the USAF mighty.
PLAAF record against USAF:
6) Dangdai Zhongguo Kongjun [China Today: Air Force], (Beijing: China Social Sciences Press, 1989). PLAAF Headquarters Education and Research Office, Kongjun Shi [History of the Air Force], (Beijing: PLA Press, November 1989). The PLAAF describes these air battles as occurring during involvement in "liberating Tibet," the "War to Resist America and Aid Korea," numerous engagements with Nationalist and U.S. aircraft over the Taiwan Strait, the "War to Aid Vietnam and Resist U.S. Aggression," and the 1979 "self-defensive counterattack" against Vietnam. During the Korean War, the Chinese Air Force reportedly shot down 330 American planes and damaged 95. During the 1958 Taiwan Strait crisis, PLAAF data indicates the air force and naval air force aircraft shot down fourteen and damaged nine aircraft. During the Vietnam War, the PLAAF states that its AAA units were involved in 558 battles, shooting down 597 U.S. aircraft and damaging 479. Like the figures cited during the Korean War and Taiwan Strait Crisis, they may not agree with Western figures. In addition to aircraft that its AAA shot down over Vietnam, the PLAAF history describes in detail how its pilots shot down three U.S. Air Force (one F-4B and two A-4B's) and two Navy (one A-3B and one A-6) aircraft and seventeen unmanned reconnaissance drones over or near Chinese territory. The official PLA Naval Air Force history also identifies two U.S. drones and four aircraft (F-4B, F-104C, F-4C, and A-1) that naval air force pilots shot down over Hainan Island. No air combat took place during the 1979 border conflict with Vietnam. The August 1998 issue of Xiandai Junshi is devoted to the 70th anniversary of the PLA and carries additional information about aircraft the PLAAF shot down during the 1950s and 1960s.
NOTE: Of course the US would dispute or not agree with the figures.