You kinda got the idea that a rod with a more moderate action will handle DT better than a stiffer tip casting fast action rod,,,, but that doesn't mean the moderate rod will not handle the WF line as well as a DT.
There is good reason most flylines sold are some sort of WF design and that is they simply as easier to cast for most anglers under most conditions.
DTs do land softer which for fishing small flies in calm conditions can be advantageous, but DTs are blown around more in the wind and some rod action / angler skill combinations make shorter casts (and casting for distance) harder to execute.
The so called advantage of having a reversible flyline in a DT isn't really such a big deal anymore,,, as with proper care (frequent cleaning and line dressing) a modern WF fly will last most anglers several years.
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