These aren't the best photos, but you can tell the difference between the two by the dimensions of the pitcher. 'Oke Giant' is more slender with a smaller hood compared with the length of the pitcher tube. Normal minor has a shorter, squatter appearance. In effect, 'Oke Giant' is a stretched version with the pitcher tube reaching 70 odd cm, instead of the usual 30.
S.minor var. okefenokeesis: