No, they did NOT come out the same year. Stomp442 was released in 1995, Trendkill, May 1996. These are 2 VERY different records. I see no point in comparing them. I like Stomp quite a lot, but I haven't listened to Trendkill since the month it came out. I got rid of it soon after. Pantera had really lost its luster with me at that point. I wasn't into it anymore. After almost 10 years, I'm ready to re-visit it.
By the way, Prong's Rude Awakening came out shortly before Trendkill. I love Prong (Victor with Ted Parsons era), and Rude Awakening is a killer swan song. I don't know their (well, Victor + hired guns) new stuff, but the band Victor had in 2002 was killer.