Dirk.
On stats, Dirk.
Team success, Dirk.
Awards, Dirk:
Dirk edges him out in pretty much everything...
Dirk:
NBA champion (2011)
NBA Finals MVP (2011)
NBA Most Valuable Player (2007)
11× NBA All-Star (2002–2012)
4× All-NBA First Team (2005–2007, 2009)
5× All-NBA Second Team (2002–2003, 2008, 2010–2011)
3× All-NBA Third Team (2001, 2004, 2012)
NBA Three-Point Shootout champion (2006)
NBA Shooting Stars champion (2010)
FIBA World Cup MVP (2002)
FIBA EuroBasket MVP (2005)
6× Euroscar Award Winner (2002–2006, 2011)
5x All-Europeans Player of the Year (2005–2008, 2011)
Mister Europa Player of the Year (2005)
2× FIBA Europe Player of the Year (2005, 2011)
Sports Illustrated NBA All-Decade Second Team (2000–2009)
Silbernes Lorbeerblatt (2011)
German Sports Personality of the Year (2011)
Naismith Legacy Award (2012)
Pierce:
NBA champion (2008)
NBA Finals MVP (2008)
10× NBA All-Star (2002–2006, 2008–2012)
All-NBA Second Team (2009)
3× All-NBA Third Team (2002–2003, 2008)
NBA All-Rookie First Team (1999)
NBA Three-Point Shootout champion (2010)
2× Big 12 Tournament MVP (1997-1998)
Consensus NCAA All-American First Team (1998)
In his prime, Dirk was probably a top 5 player in the league. Dirk was unquestionably the player who lead his team to a title. Dirk is a former league MVP. Multiple All-NBA 1st team appearances. Dirk was a "superstar" in his prime. Pierce never got onto that level. KG was our superstar best player in 2008 despite Paul winning finals MVP.
Pierce is my second favorite player of all time behind Bird... but Dirk was definitely better than Pierce. At no point did I ever consider Pierce a superstar in this league. He was an All-star... a Top 15-30 player... and always one of the top 5 small forwards in the league.
FYI, Bill SImmons ranks Dirk #36 in his Hall of Fame Pyramid. He has Pierce ranked #47. So they are close, but you give the edge to Dirk.