The company seems to have either deleted their website or gone under, but according to a blog post about the product that was written in 2006:
The Great John Toilet Company of Laredo, TX will sell you a toilet that accomodates your tons-of-fun lifestyle.
•150% More contact area on the seat.
•Extra wide base with 4 anchor points on to prevent tipping.
•“Side Wings” to prevent pinching if your fat hangs over the side of the seat.
•Reinforced structure holds up to 2000lbs.