Yes, I felt the Stormtroopers in Rogue One were intimidating. In fact they ‘hit the targets’ so thoroughly that our band of goodies got wiped out. They definitely seemed more deadly than the ‘best’ troops on Endor.
Chirrut was on another level of force-sensitive badassery, and I didn’t have any issue with him ‘incapacitating’ (I don’t know if he actually killed them) a small squad of Stormtroopers. It’s a trope that we’ve seen in a thousand samurai and martial arts movies. The marshalling of ‘Chi’ that enables Chirrut to take down the heavily armed adversaries.
Then again, I grew up watching Roger Moore 007 take out 6 foot heavies with a gentle karate chop to the shoulder blades so maybe I’m not the best person to judge!