When you edit values for several selected Comp Rows or objects (Cut Handles etc.), the changes will always be relative. For example, if you change the Recording Offset or Level when several Comp Rows are selected, the recordings will all be changed by the same amount; their relative values will be retained.
The “Match Values” function in the Inspector can be used for matching Recording Offsets and Comp Row Levels of several selected Comp Rows to the offset/level of the topmost selected Comp Row. It can also be used for matching Cut Crossfade values of several selected Cut Handles to the Crossfade value of the Cut Handle with the earliest start position in the clip.
Matching Cut Crossfades is a time-saving function if you want to apply the same Crossfade times to several Cuts throughout the clip. If you want to eliminate any clicks between segments in your comped clip, you could apply a Cut Crossfade to the first Cut and then match the other Cuts to get the same Crossfade times in one go: