When ripping with EAC, some tracks might copy with 99.7% or 99.9% quality. 100% track quality only occurs if there is no need to re-read a sector. If EAC says "copy OK" at the end of a track, then that track was copied perfectly, no matter if it said 99.5% or 99.9% or 100% track quality. Additionally, if EAC says "no errors occured" at the end of the rip log, then all the tracks were copied perfectly.