It is not that "love" of Hashem different, it is that the willingness and understanding of what Hashem means that causes us to belong to Hashem needs the complete subjugation of one's יצר (both טוב ורע) to the conscious determination as to what one's purpose in life is. We need to do this, not through fear, not through duty, but through the free willed exercise of our being, which is called love. That is why the Shma expresses this in three terms that are twined together.
The threefold cord will not be cut
That is why we needed the three patriarchs to develop our minds and our souls.
Rav Hirsch also says
בכל לבבך ... both the יצר טוב and the יצר הרע are to be used to serve Hashem
Yea, in truth, none of our inclinations are in themselves good or bad.
All of them, the most sensuous of the sensuous ones, the most
spiritual of the spiritual ones become good or bad according to
whether or not they are usedwithin the limits, and for the purpose
Hashem has allotted to each one of them, or misused, going beyond the
limits, neglecting the purposes, or changing them for other purposes
which Hashem has set for them.
Raav Hirsch continues regarding our existence
בכל נפשך ... not to think that this remaining in His proximity would
be bought at too high a price by giving up the whole existence here
below for it.
Rav Hirsch brings the story of Rabbi Akiva from Berachos 61b as an example of this concept.
ובכל מאודך: ... using all one's means in the service of Hashem as well as in renouncing every gain or acquisition which can only be obtained or kept through transgression of Hashem's laws.
... For מאד is not really only one's wealth of money but altogether the complex of all means for accomplishing anything and so comprises everything which the management of Hashem's Love measures out to us.
