DISH delivered Pac-12 "game only" HD until a few weeks ago (Big-10 was DISH's only 24/7 HD RSN). Some delivery is more important than HD delivery.
The "game changer" of SEC is Pac-12 latching on to SEC-ESPN as the network Pac-12 wants to be - Demanding the same delivery as SEC-ESPN Network. There are signs in their latest statements that they feel they should be treated like SEC-ESPN ... including the negative comments toward DirecTV for adding SEC and not Pac-12 noting SEC's parent company's leverage. While "carry us like SEC" vs "carry us like BTN" isn't different on DirecTV it gives them another network to point to. When Longhorn is added nationally we will probably see more outcry from Pac-12 that they are being treated unfairly. Every RSN that gets national carriage is one more reason why Pac-12 would want national carriage.
If they note "the parent company's leverage" that's tacitly admitting their "go it alone" strategy isn't as wonderful as Scott has claimed it to be. That's what they gave up by maintaining 100% ownership. BTN and SECN were willing to give up half ownership, in exchange for gaining that leverage. That's one of the big reasons why they've got better coverage than Pac 12.
No matter how much Pac 12 may "demand" equal treatment, they can't have it both ways and expect equal treatment while having no leverage to enforce it.
When renewal time comes along for BTN, they'll likely demand a fairly significant bump in rates (the WSJ expects a near doubling) and basic package coverage in the "new" B1G regions in the NJ/NYC area and Maryland/DC area. If they were going it alone, they probably wouldn't get it. But they have Fox conducting those negotiations, and Fox can hold FS1 (for whatever that's worth) FNC (which is probably worth more than FS1) and in the NYC area YES hostage to guarantee their BTN demands are met.
When renewal time comes along for Pac 12, if they raise rates or want to change terms to increase carriage, some providers might say no. Pac 12 has only the threat of losing that one channel, and if providers think the rate increase is too much and take them off the air. They won't be risking losing other stuff that many customers would value more highly than a conference network, such as FNC, YES or the big dog ESPN.