I knew this was coming up soon and I just read Bret's book. He's was on a plane to somewhere when he got the call of the accident happening.
I'm not going to start the yearly "RIP" thing but I wanted to remember that even though I never got to meet Owen, or any of the Hart family other than Jim Neidhart for a quick picture, he sure left an impression on his family, friends, and fans.
By your method, draws/no contests count the same as an outright loss, which really isn't accurate either. Most sports leagues (NFL for example) count ties as 1/2 win and 1/2 loss. HBK's winning percentage should be .536.