Cs Source Vs Cs 1.6
1) Source seems to have smoother movement especially on the net when one gets shot
in 1.6 you will get pulled back few feet. This affects a) your aim
b) the feeling of continuity/realism
Another side effect of this is that when you get shot you're still moving at a decent clip and you might be harder to hit especially for people who cannot aim.
For instance in 1.6 there will be the crouching people who will aim at a doorway. You try to strafe in, first bullet hits you, now you're stuck remainder will also hit. Only choice u have is to either jump or crouch. If you jump your accuracy goes to hell. If you crouch: 50/50 if your opponent was aiming for your head u live if he was aiming for your chest you're probably gonna get shot in the head now.
Just check how often people crouch and win in cs 1.6 and compare with cs:s :)

In CS:S I often end up outturning/out maneuvering my opponents. Running circles around people with a plain old deagle! To me that is fun. I am sure people who prefer to crouch and spray will disagree. But anyone who has played fps for a decent amount of time and knows how to circle strafe is likely to prefer the movement in CS:S over cs 1.6.

2) I think the weapon spreads etc have not really been tweaked that much, however the crosshair in source zooms in more. It becomes one tiny pixel wide in the center with ak/aug even when standing up. This is representative of the actual bullet that will come out.
I.e perfect headshot. While in cs 1.6 the crosshair is well always a little spread out.

Overall once you get used to it the cs 1.6 crosshair might actually help your aim.


Why are people still playing 1.6?
a) poor hardware
b) stuck in old times, emotional attatchment to cs 1.6
c) not willing to play at a slightly lower level for even a few days before reacquiring old aim or even surpassing old skill levels.
In cs:s you can totally dominate once you learn how to strafe.

Anyway around 4 months ago you would have found 0 players on the one and only indian cs:S server. The scenario is now improving a bit; the cs:s server is often loaded during peak hours at night and even during random hours you can find a few players on the server.
While the traffic on the cs:S server is still not as high as 1.6 servers i think that will change over time.

I'll post a video later to demonstrate the diff in getting shot while strafing in cs 1.6 vs cs:s