I am so stupid-excited for Nancy Grace Roman launch just a few weeks, surprised no posts yet
it's not a competition but JWST almost pales to the state-of-the-art tech (because JWST was held up for so many years budget-wise)
28mbps downlink vs 500mbps from a MILLION MILES AWAY, 1.5TB per day download
imagine what new they will discover with it
Yes, but remember they are very different telescopes for different types of astronomy. Roman is a survey telescope with a wide field of view, designed to discover new objects, etc. JWST has a large aperture and narrow FOV to get the closest look possible at specific targets identified in advance. They will compliment each other well.