It is the same model and Part Number (PN).
For more context, the PN 783849-01 that you see in the website is a "shipping kit", whereas the PN 157732-01L is the cRIO itself.
Basically, the shipping kit is the PN that includes the box, manual, cables and cRIO. In other words, the 783... number has inside the 157... device with its shipping accessories.
Regards,