Getting back to the thread:

That extra $75,000 of coin-in on the 8/5 Bonus Game to reach the same number of tier points, if played on the 7/5 Bonus game would be an extra $75 comp dollars.

While that would not offset the additional expected loss of the 7/5 game it shows that play on the 8/5 game with $25 per point also reduces Reward Credits.