I ordered two gotu kola plants both from different stores. why are they different? (with pics)?

Question

ok here they are. they were sold to me as gotu kola (centella asiatica/hydrocotyl asiatica), but they both look different. why?

This one i bought from companion plants:

http://www.mistari.com/gotu1.jpg

This one i bought from neem tree farms:

http://www.mistari.com/gotu2.jpg