If you search for 'CoD 4: MW' on this site, you can look at speedruns done on Recruit, Regular, or Veteran difficulty. My question is, why are we not given this option for other CoD's? For example, CoD World at War does not have the option to look at Speedruns done on Recruit, Regular, or Veteran. Why is this the case? Any way of implementing this feature into the site?