From what I understand, the difference is more with enom.com than enomcentral.com. enom has always been a reseller-focused business, but until now their website made it look like they were a retailer. They don't have that many direct retail accounts, so they focused enom.com on their core business which is serving resellers. Then they redirected their small retail base to a different URL. You're right it doesn't look like enomcentral.com is that much different than the old enom site.