The answer to your question is math of my own.

A normal human being with a BELOW average running speed of 10 mph. Can cross 10 feet in less than 1 second. As 10mph translates into 14 fps. 

The person being rushed has less than 1 second to react. While that's not unreasonable, people can fire guns that quickly, we're talking about a superhuman and a normal human. 

Let's amp the math up. 10 mph can cross 100 feet in about 7 seconds.

Let's amp the speed up. To Olympian levels.

20 mph. 

100 feet in 3.5 seconds.

Record breaking speeds.

30 mph.

100 feet in 1.75 seconds.

Superhuman speeds.

50 mph.

100 feet in 1.3.

Let's put this onto Godfrey's flight speed.

60 mph.

1.13 seconds. 

These would all still be under the LOW tier speeds listed in the Nexus of Worlds Multiverse hosted by Skallagrim a while back. These aren't even the peak of that Tier. 

Your average sports car can move at 200 to 220 mph. So let's do the math at that.

.03 seconds to cross 100 feet.


I restate my point from before.

Guns don't kill people in the Arena.
People kill people in the Arena.