Inuyasha certainly has the hax on his side. Natsu isn't tanking Wind Scar. If he did he sure is not surviving Meido Zangetsu. Adamant Barrage should mess him up too. Most of Inuyasha's Tetsaiga techniques if not all could one-shot Natsu imo. Neither is incredibly fast so I don't think speed is an issue here.
conclusion: good old hanyou takes this.
gosh if it werent for the lack of speed feats inuyasha would have been such a strong verse.
i remember the times naraku could solo the hst...
Yeah. It would still be on par with the HST if not higher on average if the top guys had decent speed and maybe more raw strength.