Well, I just checked it. It did sell better on the GC, but it didn't start on the PS2 (or was a PS exclusive in the past).
{1996-08-06}	[SFC]	Harvest Moon	(Victor Interactive Software)
{1997-12-19}	[NGB]	Harvest Moon GB	(Victor Interactive Software)	-	 27,421 	/		 137,207 
{1999-02-05}	[N64]	Harvest Moon 64	(Victor Interactive Software)	-	 27,597 	/		 93,073 
{1999-08-06}	[NGB]	Harvest Moon 2	(Victor Interactive Software)	-	 -   	/		 95,465 
{1999-12-16}	[PS1]	Harvest Moon: Back To Nature	(Victor Interactive Software)	-	 31,244 	/		 115,881 
{2000-09-29}	[NGB]	Harvest Moon 3	(Victor Interactive Software)	-	 19,944 	/		 74,912 
{2000-12-07}	[PS1]	Harvest Moon for Girl	(Victor Interactive Software)	-	 6,139 	/		 6,139 
{2001-07-05}	[PS2]	Harvest Moon: Save the Homeland 	(Victor Interactive Software)	-	 15,338 	/		 44,888 
{2002-10-17}	[PS2]	Harvest Moon: Save the Homeland [Playstation 2 the Best]	(Victor Interactive Software)	-	 3,026 	/		 6,414 
{2003-04-18}	[GBA]	Harvest Moon: Friends of Mineral Town	(Victor Interactive Software)	-	 20,050 	/		 161,430 
{2003-09-12}	[GCN]	Harvest Moon: A Wonderful Life	(Marvelous Entertainment)	-	 26,130 	/		 114,678 
{2003-12-12}	[GBA]	Harvest Moon: More Friends of Mineral Town	(Marvelous Entertainment)	-	 10,757 	/		 108,362 
{2004-07-08}	[GCN]	Harvest Moon: Another Wonderful Life	(Marvelous Entertainment)	-	 13,301 	/		 51,772 
{2004-11-11}	[PS2]	Harvest Moon: A Wonderful Life	(Marvelous Entertainment)	-	 15,889 	/		 38,706 
{2005-03-03}	[GCN]	Harvest Moon: Shiawase no Uta	(Marvelous Entertainment)	-	 19,394 	/		 70,673 
{2005-03-17}	[NDS]	Harvest Moon DS	(Marvelous Entertainment)	-	 22,026 	/		 107,136 
{2005-11-02}	[PS2]	Harvest Moon: A Wonderful Life [Playstation 2 the Best]	(Marvelous Entertainment)	-	 3,078 	/		 40,710 
{2005-11-10}	[GCN]	Harvest Moon: Magical Melody	(Marvelous Entertainment)	-	 3,603 	/		 6,912