Besides the first 6 chapters leading up to the decision, Conquest goes through an entirely different route than Birthright and it's quite the challenge too.
Birthright is geared more towards beginners and recently new fans of the series that got onboard with Awakening.
Conquest is geared more towards the expert, long time Fire Emblem fans. It's hard, so be prepared.
Hardware Comparison Threads:
Current Thread
Is Hardware Getting TOO Powerful?
Older Threads:
PlayStation/Xbox/Switch: 2022 Edition
PlayStation/Xbox/Switch Hardware Battle: 2021 Edition!
PlayStation 4/Xbox One/Nintendo Switch: 2019 vs. 2020
PlayStation 4/Xbox One/Nintendo Switch: 2018 vs. 2019
PlayStation 4/Xbox One/Nintendo Switch: 2017 vs. 2018
PlayStation 4: 2015 vs. 2016 vs. 2017