Next time, try doing the test with bottles opened at the same time. I don't know those wines, but red wines from my country, nicer wines (around $15-20 bucks) are ready to drink after 10 minutes from being opened, while cheaper ones ($5-8) need hours. If you opened the 'cheaper' one in the morning and let it breathe (even if you close the bottle after using it still transforms) and the nicer one you just opened and poured, that may also explain the difference in preferences.