The "roar" & "claw" sounds to an Australian ear,like "ro-" (as in "rot"),&"clo-" (as it "clot").
As such,it differs from the "normal American" example in the "how to speak New York" link,where it is more like "Roarr"
The "New York" pronunciation,with the "r" present,but not emphasised, sounds normal to an Aussie.