Assuming your computer can handle KR like mine can then here's a few comparisons. On that, I must also say I'm honestly confused when I see the same people whining they won't upgrade to run KR and then post saying how their rigs can handle Crysis on Ultra High, 1680x1050. Fair's fair.
2D Vs. KR = Faster here, slower there.. But over-all KR handles it all better.
2D/Hack Vs. KR = No questions about it, hack all the way.
2D/Hack Vs. KR/Hack = You cannot hide it. "Discreet" just got blown out of the window.. At least with what I use, no matter how much I tinker with the options.
An interesting point about the 2nd case is that KR will "mask" skipping caused by hacks probably because of how it handles stuff. You will have somewhat increased difficulty spotting speed-hackers if you don't repeatedly fight them.
Then there's the issue of the characters not being exactly where you see them per second and perhaps KR was meant to eliminate this thus "masking" skipping as a side-effect.
And lastly there's the player's skill in evading you during a chase and knowledge about the "map" they're fighting in. The latter is far more important. Many times on my Ninja I'd just skip a corner fast and hide. And people would continue in a straight line past me yelling "HACKER OMG". So there's also that kind of situation.
In the same sense some confuse me about their hardware, some others confuse me with their claims about their connection speeds, then whining about speed hacking.
Furthermore people saying they're on KR as an excuse is far smarter than coming with the old "I ping 0-5".. Or "I live next to the Server" ... Or even the favourite "My dad haz me a 500Terra connection from outter space" kind of replies.
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As said, most of them confuse me with their contradictory claims over time.. Even though it is usually me blamed for contradicting my self in my posts(often without any evidence).
See you around, sorry to sort of intrude.