His mana eyes could only perceive a few mana cores that were at the Lique stage. Other than that everyone was at the Prismar stage.
Because of that, it was obvious that the majority of big clans had brought their highest authorities to the grand meeting.
If Jason was not wrong, every big clans' patriarch should be there, in addition to some important guests.
Shane was strong but unfortunately not powerful enough to be on par with the big clans that had more than 50 years to absorb mana while he had to escape from a few clans' pursuit.
Furthermore, they weren't deemed as important enough to attend the grand meeting.
As such, they were considered anomalies, and it was only because of the special stance they had in a few big clans that Jason's masters had been allowed to attend the meeting.