Hmm, that is odd. You are correct, a full tower is bigger than a mid tower. Those specs must be off...
Anyway, I am the happy owner of the tower in your second link (HAF full tower), and I must say that I really like it. It is great for airflow with the large, quiet fans, and is ready if you ever want to upgrade to watercooling. I highly recommend this case!
Intel Core 2 Quad Q6600 @ 3.2GHz
4GB Mushkin DDR2 1000
Kingwin Mach 1 1000 watt Power Supply
Asus 4870 x2 graphics card
Gigabyte GA-EP45-UD3P motherboard
Cooler Master HAF 932 case
Samsung SyncMaster T240
3DMark Vantage:
X7241 (all settings maxed)
CPU: 11207/GPU: 7109