2003 Stadium Club - a question

So, I picked up a few bricks of baseball cards the other day.  Two bricks for a buck.  One never know what one will find.  I found some 2003 Stadium Club.  And then I found some more.  But there were two different card fronts, same backs.

A bit of research indicates that the double might be a hobby edition.  There are 150 cards in this set.    Zistle shows that there are variants for the last 50 cards.  The cards are cataloged as 1##H.  But I don't know how to determine which is which.  So, let's look at a few examples.

First up, Sean Pierce.  No clue.  I'll go with the second one as the hobby card.  There is a rail fence in the second shot.  Maybe where he ties up the polo ponies.  That's a hobby.

2003 Stadium Club
Sean Pierce (card # 123)

2003 Stadium Club
Sean Pierce (card # 123)

Drew Henson.  Boy, this is a tough one.  I'll go with the second one again.  Fielding looks like a hobby.  Batting looks like work.

2003 Stadium Club
Drew Henson (card # 106)

2003 Stadium Club
Drew Henson (card # 106)

Carl Crawford.  Second one.  Again.  Almost a smile on his face.  Almost.

2003 Stadium Club
Carl Crawford (card # 108)

2003 Stadium Club
Carl Crawford (card # 108)

Il Kim.  No clue.  I'll go with the second one as the hobby card.  No spikes.  Must be a hobby.

2003 Stadium Club
Il Kim (card # 120)

2003 Stadium Club
Il Kim (card # 120)

The reality is I have no idea.  Nothing jumps out at me and says, "this is the hobby card".  Nothing.

So, a little help, please?