Jake is not a bad fighter but it would be really hard to consider him one of the greatest, he has so much to do and work on besides he is about 26 years, has like 5 more years of prime before he start to age and loose speed very few cases where boxers over 35 are still great and those usually are consider the greatest
His technique just looks undisciplined. I'm sure he works really hard but it just looks so sloppy and chaotic.