How accurate are these tests?

K • Boy mom 💙

I just took this Walmart Equate test that is supposed to compare to the ClearBlue digital. How accurate is this? I am 10DPO and AF due in 4 days. Last month I had my first MC but with that pregnancy, I didn’t get my BFP until 2 days before AF was due. This time, I got a faint positive 6 days before AF was due.