these numbers are in kiloBIT.
flashfxp shows number in kiloBYTE.
(kiloBIT/sec)/8=kiloBYTE/sec
you said it yourself, your upload is only 128kbit, which is about 15kilobyte/sec.
and in the future when you talk about FlashFXP do say so, becuase "FXP" and "FlahsFXP" are 2 completely different things.