Here's the final four. NC, Runner up, other semifinalists.
2012- Kentucky #2 Off, #9 Def- Kansas #19 Off, #4 Def- Ohio St #7 Off, #2 Def- Lville #103 Off, #1 Def
2011- Uconn #16 Off, #14 Def- Butler #50 Off, #49 Def- Kentucky #7 Off, #15 Def- VCU #32 Off, #86 Def
2010- Duke #1 Off, #4 Def- Butler #50 Off, #5 Def- WV #11 Off, #22 Def- Michigan St #28 Off, #30 Def
2009- UNC #1 Off, #16 Def- Michigan St #20 Off, #10 Def- Uconn #15 Off, #3 Def- Villanova #22 Off, #15 Def
2008- Kansas #2 Off, #1 Def- Memphis #4 Off, #4 Def- UCLA #7 Off, #3 Def- UNC #1 Off, #19 Def
2007- Florida #1 Off, #12 Def- Ohio St #4 Off, #15 Def- UCLA #23 Off, #2 Def- Gtown #2 Off, #20 Def
2006- Florida #2 Off, #5 Def- UCLA #28 Off, #3 Def- LSU #50 Off, #4 Def- George Mason #49 Off, #18 Def
2005- UNC #1 Off, #5 Def- Illini #3 Off, #11 Def- Lville #7 Off, #14 Def- Michigan St #6 Off, #25 Def
2004- Uconn #4 Off, #5 Def- Gtech #25 Off, #3 Def- Duke #2 Off, #4 Def- OkState #5 Off, #12 Def
2003- Cuse #11 Off, #19 Def- Kansas #6 Off, #1 Def- Texas #3 Off, #44 Def- Marquette #1 Off, #101 Def
In case you don't want to read my crappily formatted thing:
Lowest Offense- Louisville 2012 #103
Lowest Defense- Marquette 2003 #101
Average offense of final 4 team: 12.63
Average defense of final 4 team: 15.88
Average offense of National champ: 4.1
Average defense of National champ: 9.0
Yeah guys, I think it's official, offense wins championships.