The comparison is larger than old versus new. Energy control, maintenance, reliability, ship integration and the range of aircraft all change the engineering tradeoff.
These pieces follow a signal, a workload or a physical constraint through the system instead of stopping at a product label.
A hidden acoustic channel can pass through consumer speakers and microphones without sounding like intelligible speech.
Model behavior feels different when the hardware path can keep pace with an interactive workflow.
Interfaces, capacity, encryption and boot state all matter before the data begins to move.
A domain extension is an operated piece of global infrastructure, not merely a name someone registers.