Assuming this is directed at me, since superpunk doesn't make good points. I think it's probably just a case of what happens when you have 32 different organizations allocate resources independently under convoluted circumstances like any CBA requires. Some guys will default to having longer term contracts so the club has more control, knowing they can have x% of the cap eaten up in dead money if they need to cancel them. Some guys will prefer to not have so much dead money and are more comfortable having good players theoretically exposed in future years knowing they'll have plenty of unallocated resources available to sign those guys if they still want to. Maybe they end up paying a premium for some of them, but then they also won't be getting penalized if a guy on a long term deal gets hurt.
Or, for example, some team might decide to do two year deals for street VFAs, so the club has an option on them in year two if they play really well. Like we didn't do with Robinson two years ago and then did do with Dan Connor last year. That $3M or whatever it was that we didn't want to pay this year would show up on our books, but there's really no downside to the team for having that bit of insurance hanging out in our future cap dollars. Had Connor blown up, it would have come in handy. So, just that policy alone spread across two-three VFAs would be a $6-9M difference on the coming year's cap. Ie, there's naturally going to be variation in how teams envision and model for their caps, and it's difficult to account for it if you're just reporting total dollars/season.