A question of balance; why Modern Warfare 2 gets it wrong

Excerpt from article:

"There was a time when multiplayer videogames in the first person shooter genre were based on one core concept; and that concept was purely the skill of the player. This skill was based on experience and the more hours a player played their game of choice, the better they became at utilising the toolset presented to them.

The tools the skilled player had were no different to that of his or her lesser skilled opponent, but through practice the player learned to utilise these tools in a quicker and more efficient manner. Their enhanced knowledge of their environment enabled them to gain an upper hand on their enemy as well as predict with greater accuracy their opponent’s next move.

It all become’s second nature. The brain calculating the variables involved with an ever increasing speed; the muscle memory of the player’s hands more attuned to the controls, the eyes more attuned to picking out the intricate details that enable us as players to improve.

But today games are changing and this change is not something I welcome."