Possibly.
Eastman would have the advantage of more name recognition this year compared to two years ago (just like Marie Newman in her contest against Dan Lipinski), so don't automatically assume that Bacon would cruise to victory if he were to face Eastman again.
The primary (IL) / general (NE) comparison doesn't really work, though. Eastman is probably too progressive for this district. Not saying she couldn't win under any circumstances, but she'd be the underdog against Bacon whereas I think with a more suitable candidate we'd have a pure toss-up race.