The piston will probably have 4 rings (not sure exactly how many on this engine), 3 compression rings and an oil scraper ring. The job of the compression rings is to seal the piston to the bore. The oil scraper ring as its name suggests, scrapes oil from the wall of the bore and insures that the correct amount of lubrication is applied to the piston/rings without allowing too much into the bore.
In your case if there is oil in the intake due to high blow-by causing carry over from the breather, then yes it will be likely due to worn compression rings which would be more likely to show up on a compression test.
You could try a compression test on each cylinder and then repeat it with a drop or two of oil in the bore. The oil will help the compression rings to seal if they are leaking and in this case you will see an improved figure when you repeat the test.
If the oil is passing the scraper ring into the chamber then its possible you will still have a good compression figure anyway.
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