^The lace - one of the things I love most about AP. I don't need to say much about the differences here!
^Waist bows. DoL one is detatchable and APs one is sewn on.
^The built in pettis.
^The lining. AP is fully (and beautifully) lined, DoL is only lined on the skirt where it has the built in petti.
^The waist ties. APs is detatchable and DoLs is sewn on. AP also uses lovely detail like the silk bow and lace edging - DoL did pretty well with the heart shaped end.
I also have to mention the fabric is very different! DoL used thin cotton and AP used Burberry fabric - in some pictures you can see the difference between the fabrics if you click for a larger view.
When choosing between replicas and originals it's kind of Quality VS Quantity. If you want high quality, long lasting clothing then go for brand. If you want lots of dresses that you probably won't wear very often then go for replicas if you wish. This is purely asthetics of repicas vs original - I really don't care to go into the morals and such of art work theft etc. Thank you for reading and I hope this was helpful!