2021 James Hub will see about 3 times farther into the universe but the 2025 of Roman Wide Field will scan 50 times more space in the same amount of time as the First Hubbles 2011 Upgrade has done.
It will be amazing. Amazing
Honestly, What the fuck do we need to know any of this shit for? we're never going to visit any planet outside of our own solar system anytime soon.