There are different factors that possibly contribute to the above thought. For example , A pankti in Guru Granth Sahib may give out different meaning to 2 different persons (does that mean that the Pankti had 2 meanings ?) , i think NO - its only that the thoughts/levels of the 2 persons are different. And above all we know we all have different KARAMAs in previous JANAMs which also is a measure how Guru Sahib treat us individually and differently.
We often say - Wahegur jo Karda Chnaga Karda. Now we heard that story when the King's finger got cut and his VAZIR said the same and he got jailed. But later when King was saved in Jungle from the BALLLI due to cut finger he realized his Vazir words so Likewise i think Guru Sahib HUKAMs us as per as our Levels/BHANDAAs. Also possible that Guru Sahib tells us the same but the interpretation is different - JUST LIKE - 2 Gyanis doing different Viakhya of same Pankti in Guru Granth Sahib.
At last i think we need to just follow the following
--- GUR KAHEYA SA KAAAR KAMAAYO
GUR KI KARNI KAHE KO DAHVO
Bhul Chuk Maaf !!