there are no morals and there are no values without god. Lechaveyro and lamakom are both manifistations of the same thing
Rage has a good point. The Chassidic sefarim talk about how our bein adam lechavero needs to be BECAUSE of our bein adam lamakom, like that story where the Rebbe gave the poor man 100 rubels, and then called him back and gave him
another 100. The first 100, he explained, had been given because of his own personal feelings of pain for the man. This was an incomplete mitzva, so now he gave him another 100 because it was Hashem's will and nothing else! In other words, like Rage said, the true & "complete" bein adam lachaveiro needs to be BECAUSE it is Hashem's will. So much so, that Avraham told Hashem to WAIT while he ran to greet the 3 travelers...
So which is greater? It seems that Bein Adam Lachaveiro is, but ONLY when it is done BECAUSE it is Hashem's will.
(And not like the polite Germans who would use the humble expression "is it not so?" after explaining directions to someone - as in "you go left over there, is it not so?", but then later when the same Jew was in the camps, the Germans were chopping off peices of flesh and asking the Jews, "it hurts, is it not so?")