My thought is that the way your H feels is that your job success is something that adds to your own personal ego strength outside the relationship and therefore is more of a threat than something he should be celebrating. OTOH, he sees your weight loss success as something you are doing to benefit your relationship and also as something that adds directly to HIS ego strength because having a hot wife is a status perk.
BTW, I hope you are more mature or differentiated or something than me because though I was pretty ready to accept the fact that my H's sex drive was more closely linked to my appearance than any loving feelings he might have towards me, it really threw me for a negative loop when I discovered that my physical appearance was much more directly linked to his desire to show me physical affection. What I referred to as the "baby doll" effect about 1500 posts ago
"Tell me, what is it you plan to do with your one wild and precious life?" - Mary Oliver