No, pressure as an indicator of depth, not shorthand for depth, just as pressure is an indicator of gas reserve in a container of known dimension. Otherwise, pressure is simply an abstraction.Pressure, strictly speaking: depth as shorthand for pressure.
One could calculate gas loading at, say, 2-minute resolution for the entire dive, treat this as a sequence of values, then run a sequence similarity search on two of those. Commonly used sequence similarity algorithms include phoneme matching in natural language processing (speech recognition) and residue matching in DNA/RNA/protein sequences in bioinformatics.
Your reply does not address my point, which is infinite human variability and the pointlessness of metrics which have no operational utility.The sequence similarity would be nothing more than records of a specific past events.
Speech recognition? DNA/RNA? Try throwing in some Thomistic metaphysics if you really want to impress the gullible. Counting the potential number of angels on the head of a pin is about as utilitarian..