GET BALANCED!!!! a STRONG powerlifter can bench 2X his bdwt and squat and DL 3X bdwt- its that simple. Everyone starts off different, I started with a better SQ than DL due to a "badback" and just plain neglect.
Are your two movements the same? are you feet in the same position for the SQ and DL, or are you totally diff? SQ superwide and pull conventional?
What can you lockout from a powerrack on pins? are you strong on the top or bottom?
All comments mentioned and all make sense, personally I got good at goodmornings which I hated and it turned my deadlift into the feeling of doing a legpress, and I gained a few hundred pounds on it as well