Hold 1 MND = hold 37 QBT
However, the QBTs under MND are not 100% yours. You may think like Mound vault will lock your QBT and pay daily rewards to you via extra bonus rewards (from the combination of PancakeBuuny SAV + qScore).

If you have any other plan with your QBT, the MND could not fulfill your needs.
(For example, 1) you may plan to "trade" or "supply" QBT tokens, 2) you may plan to lock your QBT + collaterize your BNB to borrow BUSD to boost your QBT rewards)

So, yeah, it really depends on how you plan to do with your QBT.