Here is the Pitt depth chart:
Offense - Starters OL
OT 69 Adam Bisnowaty | 6-6, 275, RS FR
OT 68 T.J. Clemmings | 6-6, 290, RS JR
OG 78 Cory King | 6-6, 325, RS SR
OG 74 Matt Rotheram | 6-6, 335, RS JR
C 57 Artie Rowell | 6-2, 300, RS SO
Defense – Starters Front 7
DE 37 David Durham | 6-1, 245, RS JR
DE 93 Bryan Murphy | 6-3, 255, RS JR
DT 97 Aaron Donald | 6-0, 275, SR
NT 50 Tyrone Ezell | 6-4, 300, RS SR
LB 28 Anthony Gonzalez | 6-3, 210, RS JR
LB 8 Todd Thomas | 6-2, 215, RS JR
LB 44 Shane Gordon | 6-1, 220, RS SR
Eric is correct, if physical size is an advantage, GT has the advantage.
Plus the Pitt DB are 6'0 and under going against GT WR of 6'2 to 6'6.
But as Knute Rockne proved at ND, it is the size of the heart that matters.