The Sabres receive revenue sharing funds, no? So they must either meet the requirement to average at least 75% of the average per game gate around the league or... They qualify for Industry Growth Fund monies to try and grow their revenues, stipulations of which include submitting a three year business plan to the Revenue Sharing Oversight Committee, which CAN oversee and evaluate the plan, which CAN result in revenue sharing going away.
If the IGF/RSOC thing was happening, I think we would have heard about it.
So it's pretty safe to assume that although the Sabres aren't snowblowing money into HRR, they are doing the minimum ask.