It's kinda hard to explain it, but I will try my best.
It will have the kind of feeling like competing, and both
operators try their best to achieve the best. And erm, fleet will
be different, example DD from SBST, and powerful buses/comfortable
from SMRT. SMRT chose to provide us with the comfortable fleet,
making us "happy" sort of, while SBST chose to buy buses which are
enough for containing us.
That seems like a legit explaination, though now the fleet for
SMRT is becoming more similar to SBST's, since they are purchasing
DDs and as of now, they have Citaros similar to SBST.