So we can only really speculate on whether they are the same or different companies, however I don't think this is a splinter group I think this is probably an attempt to make a new brand for the same company. Why?
Well a couple things. First off, look at their websites:
http://taipan-airguns.com/ http://royal-airguns.com/ Identical templates, just a few changes in things like background color.
Second, if you go to "dealers" and scroll down to the contact information at the bottom, email addresses are different, however the contact phone number is the same. (420 777 836 378) So whoever is answering the phone for these companies is the same.
Third, if you scroll down through their "dealer list" most of the dealer list is identical, including both brands citing Utah Airguns. So if you want answers, I'm guessing UA has them if anyone does.
Just my 2c.