I guess I'll try to give some insight.
Quantum Mechanics is at many crossroads. One of the leading theories is the Standard Particle Model which predicts the existence of the Higg boson. Theoretical physicists have predicted the existence of the Higg boson and the Higg Field for quite a while. What they are not sure of is the mass of Higg bosn. There is a certain range which the mass must fall into in order for the Standard Particle Model to continue. The 125 GeV cited in the link falls into that range.
Now for the bigger picture. The Higg boson or "God's Particle" at a mass of 125 GeV would create very strong evidence for the Standard Partial Model. It provides another clue to the interaction between electromagnetism and the weak nuclear force; the electroweak interaction. The Standard Particle Model is necessary for the bigger theory of supersymmetry.
For those don't know about the theory of supersymmetry, it states that we live in a fundamentally asymmetrical universe at the present time. However, at the beginning of time, the Big Bang, there existed something which is referred to as supersymmetry. Think of supersymmetry as the children's tale of Humpy Dumpty. There was this beautiful super force which was uniform and consistent. This super force consisted of the four known forces of our present universe: gravity, electromagnetism, the strong nuclear force, and the weak nuclear force. At the moment of the Big Bang, the mass began to expand rapidly. The super force was stretched like a rubber band until it broke down into the four forces which we know about today. From that moment on, the universe has been hopelessly asymmetrical.
Now, supersymmetry is needed for the even grander string theory. String theory is at the heart of M-Theory which is ultimately the theory of everything. I am sure you guys have heard of string theory and know of all the possible implications of M-Theory. Pretty fascinating stuff.
Hope this helps.