I often wondered this myself... I use the Thompson a lot...I usually get a lot of kills, but I never seem to climb the skill ladder...I now know why...! Fucking a, can we please have every map as a bash and rifle only map. I think then my skill would go way up.
And mine would go way down, i can't aim for shit! :? and bash fk i almost fall out of my chair trying to bash.
here's a clue/tip to the skill stats: bash = the most points. and you get more points for killing someone who has higher points.