Should I be ashamed for not being able to distinguish them at times? pics from Crysis pics below:

Yes, I think you should. Crysis is impressive, but it's still obviously fake.

it is very hard to tell them apart, but upon closer inspection the real life picture has more details, crysis is not far behind though.

Crysis texture mod

 Plus real life runs on a much higher resolution. =P

But there aren't any respawn points in RL. If you lag out there, you'll be screwed.

soooo erm am i right to assume that the second pic is RL yes? coz if it would be from crysis then i would be very impressed

Here's a better and more obvious comparison to Real Life and Crysis

(For Firefox users, right click the pic and click Vew Image to see the whole image)

What are the system requirements for this real life game and/or is it multiplatform?

Gotta love Crysis