Romo is better than both
Romo is not better than Aikman.
Romo only won 2 playoff games (both wild card) in his career.
Aikman never lost to wild card teams in the playoffs during his 3 SBs in 4 years run; like Romo did in the 2007 playoffs with 12 fellow pro bowl players including two first team all pros on offense.
Aikman was a key reason why the Cowboys jumped out to big leads in the divisional round playoff games (in at least 3 of the 4 games).
1992 Divisional round: 34-3
1993 Divisional round: 24-3
1994 Divisional round: 21-3
1995 Divisional round: 30-3