I've not seen a Peavey with a Super Ferrite pickup/pickups that had a volume problem...the T20, First Gen Fury, Patriot, Foundation, Dyna.
Basses and amps have volume controls.
If any one bass is quiet compared to any other bass, the volume control on the amp would be the very simple answer to gain parity between the two basses.
A Spector bass with two EMG CS35's and an EMG Pre is going to be a different animal than a Fender Sting Bass with the early 50's single coil pickup in it.
They would both be able to perform beautifully at home and at a live or studio gig, because we use amplifiers.
Tone is completely subjective and people have varying tastes on what pickups sound great to them, the old single coil in the Sting bass sounds great, the EMG's in the Spectors also sound great.
The slant SF pickup in the First Gen Peavey Fury (and in the Peavey T20) is a very well made pickup that sounds great to my ears and to many other people's as well, it is certainly not a cheaply made or inferior pickup in any way.
If you run into any First Gen (slant) Peavey Fury basses for $40 to $125, please let me know and I will buy as many as you direct me towards.