How come Randy Orton already have more WHC reigns than Hogan,Bret Hart, Austin, and HBK?

Some top guys like Orton, Triple H, and Edge needed the World Title because it was what their character was about, being the champion.. while legends like HBK, Undertaker and others didnt need it, because the crowd simply loved them for who they were. Austin actually had alot of title reigns if you consider he was active in the WWE for only about 7 years.