I dont like warwick buzzards, just something off about them..... Possibly too much mids (and i am a low mid man myself).
However i am a John Entwistle fanboy

and i can tell you most of "that" sound John had was his fingers.
A carbon neck does help bring up the upper mids and top end zing, and the bass rings super clear, pretty much a universal trait on all the status necked basses i have heard.
I prefer a MM to a P at bridge however, its just a bigger tone, and a reversed P in standard position while im at it.
I can get John's tone just as easily on my buzzard 2 as on my sandberg PM5, i will admit though the B2 DEMANDS to be played hard and fast, its just so easy to get that bite.
The main key to getting a JE tone is either bi amp, keep bottom end cleanish (a little tubey fizz is ok, but natural not overpowering) and the top end, EQ like a lead guitar, you can go over board on treble as the lows are covered with the bi amp bass side. If you can grab "an ox's tale" there is a great section where he shows gordon giltrap the difference between bass players and bass guitarists
The other way (the way i use) is a pod x3, it allows two signal chains in the pedal, so i can essentially bi amp like above but send the signals out to an amp (mono, both chains come through and you can balance between them to fine tune) or direct to PA (which can be true bi amp).
This was my first attempt at using PC software to record..... And i messed up the blend of the echo track in mix down, (i aquired the tracks from a vid i found on youtube

) but here is me and my B2 doing a wee bit of who