First response early result negative??

So both plastic tests are 6 days sooner tests and the strip test is not an early test. I can see a faint line on the strip test, a solid line on the off brand 6 days sooner test, but the first response early result test is negative?? I thought these were supposed to be the most sensitive and best tests according to everyone on this app 😅 is this normal? Should I just consider the other 2 tests positive and the first response as a fluke? These were all taken with the exact same urine sample also