Geek,
How much time had passed from the time you put on the diaper until you noticed it degrading? If you changed at home then went out to enjoy three beers, possible about 5 - 6 hours?
I have found the "life" of some diapers to be more dependent on the total length of wear than their wetness.
As I normally am only bowel incontinent, I have worn some diapers for as long as 16 hours before changing (I now change after about 9). Although they remain "dry" except for water vapor and perspiration, some begin to degrade and break up at some point between about 6 and 9 hours. I pee by pulling up a leg gather and occasionally have noticed the top of the standing leak guards pulling away from the rest. This leaves a thin and very uncomfortable strip of strong thread which can cut into the sensitive skin. Of course, clumping can occur, even in a "dry" diaper. Also, I have noticed the mat separating from the backing. Sometimes the mat begins to split and release SAP gel crystals!
When I was double incontinent, and a heavy wetter, the diaper degradation rate was about the same and did not seem to get worse solely as a result of getting saturated - or over saturated
The premium diapers generally perform better than less expensive ones, so I guess we get what we pay for.
--John