Err, 14 Int is the highest a 3.5 point buy Fighter will want (because skill points are nice and 14 is the end of the 1:1 point buy).*
Your point is still valid. 2+2(14Int) is not much. Even Thugs(which lose a bonus feat) only get 4+2(14 Int).
*14 Int has been field tested & found desirable. There was no Int prerequisite involved.