China's J-20 Upgrades To Anchor Networked Air War Over Taiwan

He notes that after creating gaps in Taiwan's defenses, the J-20 would conduct stealth penetration, break the remaining air‐defense network, and seize air superiority over Taiwan's F‐16 fleet, which he describes as a generational mismatch.

He also highlights J-20 coordination with J-16D electronic warfare aircraft, GJ-11 stealth drones, and KJ-500 AEW&C, allowing China to compress detection, jamming, strike, and command into a single operational cycle.

The J-20 and J-35 form China's high-end force, with the J-20 penetrating enemy airspace and achieving air superiority, while the J-35 is a carrier-based fighter. China's J-16 and J-11s ensure aircraft availability and mass.

The J-20 and J-35 offer qualitative advantages, while J-16 and J-11s offer quantitative ones. Although the J-20 is not as old as the US F-22, China may see limited upgrade potential. The J-36 could address J-20's design limits with next-gen features and future upgrade capacity.

Looking at the J-20's upgrades, SCMP reported in June 2025 that silicon carbide (SiC) semiconductors have tripled the J‐20's radar detection range, giving the fighter a far more substantial first‐mover advantage. The report notes these chips enhance radar power, missile accuracy, and even laser‐weapon performance, making them a core element of China's defense technology.

For manned-unmanned teaming (MUM-T), Asia Times reported in November 2025 about China's demonstration of the J‐20 flying alongside the GJ‐11 unmanned combat air vehicle (UCAV) and J-16D electronic warfare aircraft. While Chinese state media emphasized autonomous coordination through a digital battlefield network, genuine autonomy and resilient command‐and‐control remain developmental.

As for engine upgrades to the J-20 airframe, the US Department of Defense's (DoD) 2023 China Military Power Report (CMPR) notes that indigenous WS-15 engines significantly improve agility, range, and combat persistence while increasing the missile load, preserving low observability, adding thrust-vectoring nozzles, and enabling supercruise.

Overall, these developments signal China's intent to operationalize AI-assisted air combat, even as training, doctrine, and centralized decision-making continue to constrain real-world autonomy.

But how would the J-20 fare against US stealth fighters, such as the F-22 and F-35? Maya Carlin, in an August 2025 article for The National Interest (TNI), says that China's J-20 is a serious but inferior challenge to the US F-22.

Carlin says while the J-20 has advantages in range, thrust, speed, and possibly ceiling, offering strong theoretical performance, the -22's decisive strengths include a larger missile load, an internal cannon, proven engines, mature maintenance and operational experience. She quotes US officials who say the J-20 is not yet dominant, and that the F-22's reliability, weapons, and combat-tested systems keep it ahead.

In a separate June 2024 TNI article, Brent Eastwood assesses the J-20 against the F-35, concluding that the US jet holds the overall advantage despite the Chinese fighter posing a credible threat. Eastwood notes that while the J-20 is faster, has a more extended range, and could use supercruise to threaten US support aircraft, the F-35 is stealthier, enabling a first-look, first-shot advantage.

He highlights the J-20's lack of an internal cannon and its pilots' lack of combat experience as key weaknesses, adding that the F-35's lighter airframe, mature systems, and highly experienced pilot cadre tilt the balance in the US's favor, even as the J-20 remains a formidable adversary.

However, these assessments are based on the assumptions that the US has enough stealth fighters and that it can deploy its fighters quickly to intervene in a Taiwan conflict. Low US aircraft readiness rates and the vulnerability of US airfields may nullify whatever qualitative advantages it has against China.