Bluebook practice scoring issues

So recently I’ve taken 2 practice tests. Test 11 last weekend and test 4 just now. On test 11 i got a total of 16 questions wrong, 6 on English module 1, 8 on English module 2, and 2 on Math module 2. That resulted in a 670 english score and 790 math with a total 1460. On today’s test 4 I got a total of 8 wrong, 1 on English module 1, 3 on English module 2, and 4 on Math module 2. That resulted in a 720 english score and 740 math score with a total of 1460. I just don’t understand how I could’ve gotten half as much questions wrong and still get the same score. Is there an error??? I do acknowledge that easier questions weigh more therefore if I missed those that takes my score down substantially, but I only missed hard rated questions. If anyone can explain this it would help a-lot, thanks.