As a Rihanna stan, I do not see the Rita/Rihanna comparison. Was it because she gained a lot of attention with R.I.P (which Drake wrote for Rihanna) while she had blonde hair, and Rihanna happened to be rocking blonde hair as well? With this logic, Ke$ha would be a Rihanna copy if she wrote a song for Rih and she turned it down, so K$ decided to use it herself.
And now they both happened to worth with Calvin Harris? Ellie Goulding did, too. Is she a Rihanna copy? Seriously, the absolute reaching from the Navy to have their own Bey/Rih situation is too much.
(Rita had blonde hair before Rihanna decided to have it, as well. You know how well Rihanna can pick up trends and make them look like her own.)
More on TOPIC: I am really excited for new Rita, all though guitar-led songs never are my cup of tea. At least this further solidifies an album release sometime soon.