Space and Time had always been powers that few could comprehend, especially so when these were the primary paths of the Jai Empire.
If used properly, these powers had no equal.
While Varian agreed that 'all divine paths were equal', it was only under ideal circumstances.
The universe, for whatever reason, wasn't an ideal source. It was heavily biased and the advantages of power changed from era to era and region to region.
Life powers were obviously be the strongest in a forest full of life. Fire powers in a volcano and so on.
Near blackholes, Space-Time powers obviously held the greatest leverage. It allowed someone to exert more power than they usually could.
Varian knew it because the creature's space folding technique grew stronger after approaching the black hole.
But luckily for him, not just the space but even the time field around the black hole was distorted.