It matters way more. The Mosin Nagant rifles were made in VERY large numbers and the russians wanted very fast production which resulted very poor quality in the bigger % of the rifles. They were very unreliable. You were able to hear rattling like Tic Tac box if you shake 90% of the field assigned rifles. Very small percent of the rifles were hand picked in the factory to be enhanced for sniper rifles afterwards. If some worker saw a better made rifle he just put it away for the high ranked soldiers.
Meanwhile every Karabiner 98 Kurz is piece of art. Great assembling quality, amazing parts pick, every rifle was perfect. There was no difference between the rifles for the raw recruits and the rifles for the SS officers for instance. This rifle is one of the MOST reliable bolt action rifles ever made. It doesn't need ANY enhancement to be used as long range sniper rifle. In the same time you have to disassemble the MG, fix/replace the factory made cheap parts, and do other stuff to make it reliable and actually trust your life on this rifle.
So yeah, I want to see you shoot me between the eyes with a normal factory made MN like the ones used in CoD 2. The MN is better only because it fires the bullet with 5m faster velocity than the Kar98 but still its not that accurate. The Kar98 can achieve 1000m + shots easily while the MN is in the 800's but not even near the 1km shot
EDIT: I want to clarify that I am not saying its not possible to achieve 1km shot with MN. It is, but not with the stock variant.