Can you tell me what the hell are the odds?

So, I ran Around the Bay 30K this year, no expectations, but the final chip time is puzzling to say the least:

2010: Gun for 2:15, pull a leg cramp and hobble in
Gun time: 2:20:43.2
Chip time: (2:20:27.3)


Today: Have no goal, just faster than 5 min Ks, run it consistent, strong and:
Gun time: 2:20:52.4
Chip time: (2:20:27.3)

Both years: 2:20:27:3

I don't know, that is kinda freaky. And while I was sprinting to the finish, something made me not put on that next gear.