Yeah, it's more designed to the spec the B-1A was then the B-1B we put into service, but I'm sure its RCS is closer to a B-52 than a B-1B!
As for numbers, I had a book or something that talked about it and actually had two line diagrams superimposed so you could see the relative sizes (wings swept back), that's where I got the size comparison from.
Let's see what numbers I can find:
B-1B:
L: 146ft (44.5m)
H: 34 ft (10.4m)
W: 137 ft out, 79 ft swept (41.8, 24.1)
Empty weight: 190k lbs (86k kg)
MTOW: 477k lbs (215k kg)
power: 4x 30k thrust GE (13.5k kg)
range: 7500 miles unrefueled, 3500 with normal payload (12k km, 5600km)
Tu-160:
L: 54.1m
H: 13.1m
W: 55.7m out, 35.6m swept
Empty weight: 110k kg
MTOW: 275k kg
power 4x 25k kg thrust HK-32
range: ~12k km
So, from these rough numbers the 160 is just over 20% longer, 33% larger wingspan unswept, 48% larger swept, 25% taller, 28% heavier, and similar range without refueling.