It would depend on how the watch is used. If you are an extremely active person wearing an automatic watch, it's possible that the parts for this could be working harder than the rest of the watch. Most automatics are designed in a way that normal everyday movements will be more than enough to keep the watch fully wound, so if your movements are in excess of that, the automatic will be winding the mainspring even more than is required. This could theoretically lead to the auto mechanism wearing at a different rate than the rest of the watch, but you would have to be very active for this to be relevant I would think.
If by a "watch with sub-dials" you mean a chronograph, then yes they are typically more to service as they take more time.
Your post brings up the topic that not all parts inside a watch are directly related to timekeeping - this is one reason why using timekeeping won't always tell you everything. The reversing wheels (or equivalent) in an automatic watch are some of the hardest working parts you will find in a watch. The wear on these can be severe...
Cal. 1120 reversing wheel:
These are two reversing wheels from ETA 7750's - new on the left, worn one (the most worn I've ever seen one of these) on the right:
Not saying these watches didn't have problems, but just illustrating that these are very hard working parts. The Theory of Horology textbook (used in most watchmaking schools) states that these can change direction up to 10 million times per year inside a watch.
This is a worn post on the automatic bridge for a Cal. 1120:
And there are other areas that don't affect timekeeping that can wear, so for example here is an hour hammer from a Cal. 861, and it's clearly worn on the surface that contacts the cam when resetting the chronograph:
It wasn't causing issues when the watch came in, but there's no way to know how long that would be the case. I've had these get so worn that the hour recorder reset requires a lot of force, and then this can cause other problems like distortion of the hole in the main plate where the hour recording wheel sits.
This is a "date unlocking yoke" for an ETA 7750 that has been modified to have an instantaneous date change, and the red arrow points to the surface that does all the work:
The surface was worn pretty badly, as the 9104 (HP1300) lubricant that had been placed there was long gone:
Again, the date would still change, but given the amount of wear here, I replaced the part because I wasn't at all confident it would last another 5+ years until the next service.
Cheers, Al
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