Altough that might be a fair comparison, it is an unfair statement. Street figther aint a bad figthing game by any means. It is slow, sure, but this speed in turn gives priority to other elements not so accounted for in other figthing games. Zoning, mix-ups and mind games are specially fotsies.
I personally have really enjoyed HM, it reminded me of a mix between smash brothers (directional inputs), traditional 2D figthers and the usual touhou-style and customization. It is a shame for me to see they drop the customization beyond spellcards, I really liked being able to map moves and customize bullets. With ULiL I feel like we are taking a step behind again, retaking some of the old elements. Dont take me wrong, I find that acceptable altough it pains me that sometimes innovation has to pay for the sake of consistency.
I see HM as a really nice experiment, a step away from conventional figthers and a correct step towards something more touhou-like... because lets face it, it is touho-like for the girls to fight on the air and not so much on the ground. The only thing I dislike about HM is the lack of competitive elements such as mix-ups, cross-ups and stuff like that.