Being very new to XYZ, could someone tell me what is the difference between these two invitational (uncontested) auctions?

1) 1C-1H-1S-2C(a)-2D-2S.   (a) puppet to 2D

and

2) 1C-1H-1S-3S 

As I understand it, playing XYZ 1apple-1orange-1grape- 2C puppets to 2D either starting an invit. Sequence or to play 2D.

Similarly, 2D over the 1grape is an artificial game force.

Can someone clarify difference between 1) and 2). 

Thanks.