This is a discussion on Straight Flush over Straight Flush on ACR within the online poker forums, in the Poker Rooms section; Straight Flush over Straight Flush on ACR, What are the odds of that.
Here is the replay. https://play.americascardroom.eu/online-poker-hand-replayer/poker/kwebhh.html?hhtoken=86df82809c361849bdbc26c9558d007abee0e8510b07ce7be4a77d16df199da9
On a 4-flush board like this they are not that low. Its basically no different from someone having Ac and someone having Kc on a board like Jc9c4c2c8s. Whenever you only need 1 card to make a particular hand, its much easier to make.