Sensitivity?

Brooklynn • 23, married, mom to 2 wonderful boys, Mason and Tristan, and a 3rd boy is due July 9th, 2020.
Have you guys found the 10 miu pregnancy test strips to not be as sensitive as they claim? I used the .88 Walmart test/dollar general test and I got a darker like four days ago than I have been able to with the 10 miu. I used a 10miu the same day as I used the dollar general test and it still had a darker line than the test strip.