Sage chakra = Senjutsu.. Learn to accept it.. No one claim it was on Naruto's level, but it's Senjutsu none the less.
The reference of sage in both cases is different hence the word senjutsu in both the case has different meanings.
Sage chakra or more accurately said six paths sage chakra if called senjutsu(though i have heard only fapboys say "senjutsu" this way) refers to the chakra of "Sage" of six paths and has no relation to nature energy whatsoever.Speaking strictly in terms of the chakra Sasuke received.
while
Sage chakra in case of Naruto refers to,more appropriately put,"Sage" mode chakra or senjutsu chakra with the meaning here being the chakra that one creates by combining their own chakra with Nature energy.*_*
If you google senjutsu the senjutsu wiki page comes up,
Quoting the wiki
"Senjutsu (仙術; English TV "Sage Jutsu"; Literally meaning "Sage Techniques") refers to a specialised field of techniques that allows the user to sense and then gather the natural energy (自然エネルギー, shizen enerugī) around a person. "
As for Hagoromo's chakra the wiki says on the senjutsu page
"After Naruto recieved the Sage's senjutsu, his Sage Mode became greatly empowered and, along with the chakra of the nine tailed beasts, gained access to a form referred to as Six Paths Sage Technique."
No where is Sasuke even mentioned on the wiki page of senjutsu
