I haul a lot of stuff on occasion, particularly going over 1,000 miles back and forth to Florida in the winter for an extended stay, so usable cargo capacity is an important consideration for me and my wife making the trip with no other passengers. I'm trying to compare apples to apples with my current Toyota Sienna minivan with the 2nd. row tumbled forward and 3rd. row folded flat vs. the Telluride with 2nd. and 3rd. rows folded flat.
For anybody interested, it might surprise you that the minivan in the tumble-forward mode is a foot shorter in cargo area length than the Telluride according to my tape measure applied to the Sienna and Telluride dimensions I've seen elsewhere, 6' vs 7'. The van makes up for that with a wider rear door opening and wider interior dimensions. However, you'd have to remove the second row seats in the Sienna to get the full cargo area length at which point it would carry that 4' x 8' sheet of plywood flat on the floor.
So, manufacturer stated cargo capacity (for which there is no industry standard anyway) can be quite deceptive. If you are like me who finds removing seats a royal pain while being left with only one passenger seat once I get to my long distance destination, you may never get anywhere near the 150 cf. max cargo capacity Toyota states for the Sienna compared to Kia's stated 87 cf. in the Telluride that requires no adjustments..
This brings me to a question. To me usable cargo space implies not blocking visibility. The interior dimensions I've yet to find for the Telluride are the height from the floor to the bottom of the rear window and the floor to the top of the seatbacks (not including headrest). Somewhere in that range is what I would consider the prudent maximum for piling up stuff in the back. If anybody cares to get out their tape measure for those numbers I'd surely appreciate it.
It does appear that the van somehow has noticeably more useable height according to this criteria, but it would be helpful to know how much.